diff --git a/app.json b/app.json
deleted file mode 100644
index aa3e6afd..00000000
--- a/app.json
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-  "name": "React Tutorial Server",
-  "description": "Code from the React tutorial",
-  "keywords": [ "react", "reactjs", "tutorial" ],
-  "repository": "https://github.com/reactjs/react-tutorial",
-  "logo": "https://facebook.github.io/react/img/logo.svg",
-  "website": "http://facebook.github.io/react/docs/tutorial.html",
-  "success_url": "/",
-  "env" : {
-    "BUILDPACK_URL": "https://github.com/heroku/heroku-buildpack-nodejs.git"
-  }
-}
-
diff --git a/comments.json b/comments.json
index 7bef77ad..a0a66875 100644
--- a/comments.json
+++ b/comments.json
@@ -8,5 +8,55 @@
         "id": 1420070400000,
         "author": "Paul O’Shannessy",
         "text": "React is *great*!"
+    },
+    {
+        "id": 1464862111929,
+        "author": "12312",
+        "text": "222"
+    },
+    {
+        "id": 1464862114322,
+        "author": "222",
+        "text": "22"
+    },
+    {
+        "id": 1464862118569,
+        "author": "11111",
+        "text": "111111"
+    },
+    {
+        "id": 1464862165689,
+        "author": "22222",
+        "text": "2222"
+    },
+    {
+        "id": 1464862194961,
+        "author": "11111",
+        "text": "22222222222"
+    },
+    {
+        "id": 1464862368016,
+        "author": "hy",
+        "text": "121233"
+    },
+    {
+        "id": 1464862371433,
+        "author": "222",
+        "text": "2222222"
+    },
+    {
+        "id": 1464862416312,
+        "author": "jhgjgjgjg",
+        "text": "khkjhkhkhk"
+    },
+    {
+        "id": 1464862508034,
+        "author": "2222",
+        "text": "1111"
+    },
+    {
+        "id": 1464862518122,
+        "author": "121221",
+        "text": "2222"
     }
-]
+]
\ No newline at end of file
diff --git a/public/scripts/example.js b/public/scripts/example.js
index c249427a..ccf861dc 100644
--- a/public/scripts/example.js
+++ b/public/scripts/example.js
@@ -10,6 +10,16 @@
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+/*
+  - CommentBox
+    - CommentList
+      - Comment
+    - CommentForm
+ */
+
+/**
+ * Comment
+ */
 var Comment = React.createClass({
   rawMarkup: function() {
     var rawMarkup = marked(this.props.children.toString(), {sanitize: true});
@@ -28,6 +38,9 @@ var Comment = React.createClass({
   }
 });
 
+/**
+ * CommentBox
+ */
 var CommentBox = React.createClass({
   loadCommentsFromServer: function() {
     $.ajax({
@@ -82,6 +95,9 @@ var CommentBox = React.createClass({
   }
 });
 
+/**
+ * CommentList
+ */
 var CommentList = React.createClass({
   render: function() {
     var commentNodes = this.props.data.map(function(comment) {
@@ -99,6 +115,9 @@ var CommentList = React.createClass({
   }
 });
 
+/**
+ * CommentForm
+ */
 var CommentForm = React.createClass({
   getInitialState: function() {
     return {author: '', text: ''};
@@ -140,6 +159,9 @@ var CommentForm = React.createClass({
   }
 });
 
+/**
+ * render view 
+ */
 ReactDOM.render(
   <CommentBox url="/api/comments" pollInterval={2000} />,
   document.getElementById('content')
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 632a1efa..00000000
--- a/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-Flask==0.10.1
diff --git a/server.go b/server.go
deleted file mode 100644
index 934a4cfc..00000000
--- a/server.go
+++ /dev/null
@@ -1,112 +0,0 @@
-/**
- * This file provided by Facebook is for non-commercial testing and evaluation
- * purposes only. Facebook reserves all rights not expressly granted.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-package main
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"log"
-	"net/http"
-	"os"
-	"sync"
-	"time"
-)
-
-type comment struct {
-	ID     int64  `json:"id"`
-	Author string `json:"author"`
-	Text   string `json:"text"`
-}
-
-const dataFile = "./comments.json"
-
-var commentMutex = new(sync.Mutex)
-
-// Handle comments
-func handleComments(w http.ResponseWriter, r *http.Request) {
-	// Since multiple requests could come in at once, ensure we have a lock
-	// around all file operations
-	commentMutex.Lock()
-	defer commentMutex.Unlock()
-
-	// Stat the file, so we can find its current permissions
-	fi, err := os.Stat(dataFile)
-	if err != nil {
-		http.Error(w, fmt.Sprintf("Unable to stat the data file (%s): %s", dataFile, err), http.StatusInternalServerError)
-		return
-	}
-
-	// Read the comments from the file.
-	commentData, err := ioutil.ReadFile(dataFile)
-	if err != nil {
-		http.Error(w, fmt.Sprintf("Unable to read the data file (%s): %s", dataFile, err), http.StatusInternalServerError)
-		return
-	}
-
-	switch r.Method {
-	case "POST":
-		// Decode the JSON data
-		var comments []comment
-		if err := json.Unmarshal(commentData, &comments); err != nil {
-			http.Error(w, fmt.Sprintf("Unable to Unmarshal comments from data file (%s): %s", dataFile, err), http.StatusInternalServerError)
-			return
-		}
-
-		// Add a new comment to the in memory slice of comments
-		comments = append(comments, comment{ID: time.Now().UnixNano() / 1000000, Author: r.FormValue("author"), Text: r.FormValue("text")})
-
-		// Marshal the comments to indented json.
-		commentData, err = json.MarshalIndent(comments, "", "    ")
-		if err != nil {
-			http.Error(w, fmt.Sprintf("Unable to marshal comments to json: %s", err), http.StatusInternalServerError)
-			return
-		}
-
-		// Write out the comments to the file, preserving permissions
-		err := ioutil.WriteFile(dataFile, commentData, fi.Mode())
-		if err != nil {
-			http.Error(w, fmt.Sprintf("Unable to write comments to data file (%s): %s", dataFile, err), http.StatusInternalServerError)
-			return
-		}
-
-		w.Header().Set("Content-Type", "application/json")
-		w.Header().Set("Cache-Control", "no-cache")
-		w.Header().Set("Access-Control-Allow-Origin", "*")
-		io.Copy(w, bytes.NewReader(commentData))
-
-	case "GET":
-		w.Header().Set("Content-Type", "application/json")
-		w.Header().Set("Cache-Control", "no-cache")
-		w.Header().Set("Access-Control-Allow-Origin", "*")
-		// stream the contents of the file to the response
-		io.Copy(w, bytes.NewReader(commentData))
-
-	default:
-		// Don't know the method, so error
-		http.Error(w, fmt.Sprintf("Unsupported method: %s", r.Method), http.StatusMethodNotAllowed)
-	}
-}
-
-func main() {
-	port := os.Getenv("PORT")
-	if port == "" {
-		port = "3000"
-	}
-	http.HandleFunc("/api/comments", handleComments)
-	http.Handle("/", http.FileServer(http.Dir("./public")))
-	log.Println("Server started: http://localhost:" + port)
-	log.Fatal(http.ListenAndServe(":"+port, nil))
-}
diff --git a/server.php b/server.php
deleted file mode 100644
index 75fae215..00000000
--- a/server.php
+++ /dev/null
@@ -1,53 +0,0 @@
-<?php
-/**
- * This file provided by Facebook is for non-commercial testing and evaluation
- * purposes only. Facebook reserves all rights not expressly granted.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-$scriptInvokedFromCli =
-    isset($_SERVER['argv'][0]) && $_SERVER['argv'][0] === 'server.php';
-
-if($scriptInvokedFromCli) {
-    $port = getenv('PORT');
-    if (empty($port)) {
-        $port = "3000";
-    }
-
-    echo 'starting server on port '. $port . PHP_EOL;
-    exec('php -S localhost:'. $port . ' -t public server.php');
-} else {
-    return routeRequest();
-}
-
-function routeRequest()
-{
-    $comments = file_get_contents('comments.json');
-    $uri = $_SERVER['REQUEST_URI'];
-    if ($uri == '/') {
-        echo file_get_contents('./public/index.html');
-    } elseif (preg_match('/\/api\/comments(\?.*)?/', $uri)) {
-        if($_SERVER['REQUEST_METHOD'] === 'POST') {
-            $commentsDecoded = json_decode($comments, true);
-            $commentsDecoded[] = [
-                'id'      => round(microtime(true) * 1000),
-                'author'  => $_POST['author'],
-                'text'    => $_POST['text']
-            ];
-
-            $comments = json_encode($commentsDecoded, JSON_PRETTY_PRINT);
-            file_put_contents('comments.json', $comments);
-        }
-        header('Content-Type: application/json');
-        header('Cache-Control: no-cache');
-        header('Access-Control-Allow-Origin: *');
-        echo $comments;
-    } else {
-        return false;
-    }
-}
diff --git a/server.pl b/server.pl
deleted file mode 100644
index c3212b9c..00000000
--- a/server.pl
+++ /dev/null
@@ -1,38 +0,0 @@
-# This file provided by Facebook is for non-commercial testing and evaluation
-# purposes only. Facebook reserves all rights not expressly granted.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-# FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-use Time::HiRes qw(gettimeofday);
-use Mojolicious::Lite;
-use Mojo::JSON qw(encode_json decode_json);
-
-app->static->paths->[0] = './public';
-
-any '/' => sub { $_[0]->reply->static('index.html') };
-
-any [qw(GET POST)] => '/api/comments' => sub {
-  my $self = shift;
-  my $comments = decode_json (do { local(@ARGV,$/) = 'comments.json';<> });
-  $self->res->headers->cache_control('no-cache');
-  $self->res->headers->access_control_allow_origin('*');
-
-  if ($self->req->method eq 'POST')
-  {
-    push @$comments, {
-      id     => int(gettimeofday * 1000),
-      author => $self->param('author'),
-      text   => $self->param('text'),
-    };
-    open my $FILE, '>', 'comments.json';
-    print $FILE encode_json($comments);
-  }
-  $self->render(json => $comments);
-};
-my $port = $ENV{PORT} || 3000;
-app->start('daemon', '-l', "http://*:$port");
diff --git a/server.py b/server.py
deleted file mode 100644
index fad15a66..00000000
--- a/server.py
+++ /dev/null
@@ -1,44 +0,0 @@
-# This file provided by Facebook is for non-commercial testing and evaluation
-# purposes only. Facebook reserves all rights not expressly granted.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-# FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-import json
-import os
-import time
-from flask import Flask, Response, request
-
-app = Flask(__name__, static_url_path='', static_folder='public')
-app.add_url_rule('/', 'root', lambda: app.send_static_file('index.html'))
-
-
-@app.route('/api/comments', methods=['GET', 'POST'])
-def comments_handler():
-    with open('comments.json', 'r') as f:
-        comments = json.loads(f.read())
-
-    if request.method == 'POST':
-        new_comment = request.form.to_dict()
-        new_comment['id'] = int(time.time() * 1000)
-        comments.append(new_comment)
-
-        with open('comments.json', 'w') as f:
-            f.write(json.dumps(comments, indent=4, separators=(',', ': ')))
-
-    return Response(
-        json.dumps(comments),
-        mimetype='application/json',
-        headers={
-            'Cache-Control': 'no-cache',
-            'Access-Control-Allow-Origin': '*'
-        }
-    )
-
-
-if __name__ == '__main__':
-    app.run(port=int(os.environ.get("PORT", 3000)))
diff --git a/server.rb b/server.rb
deleted file mode 100644
index 698f4339..00000000
--- a/server.rb
+++ /dev/null
@@ -1,49 +0,0 @@
-# This file provided by Facebook is for non-commercial testing and evaluation
-# purposes only. Facebook reserves all rights not expressly granted.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-# FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-require 'webrick'
-require 'json'
-
-# default port to 3000 or overwrite with PORT variable by running
-# $ PORT=3001 ruby server.rb
-port = ENV['PORT'] ? ENV['PORT'].to_i : 3000
-
-puts "Server started: http://localhost:#{port}/"
-
-root = File.expand_path './public'
-server = WEBrick::HTTPServer.new Port: port, DocumentRoot: root
-
-server.mount_proc '/api/comments' do |req, res|
-  comments = JSON.parse(File.read('./comments.json', encoding: 'UTF-8'))
-
-  if req.request_method == 'POST'
-    # Assume it's well formed
-    comment = { id: (Time.now.to_f * 1000).to_i }
-    req.query.each do |key, value|
-      comment[key] = value.force_encoding('UTF-8') unless key == 'id'
-    end
-    comments << comment
-    File.write(
-      './comments.json',
-      JSON.pretty_generate(comments, indent: '    '),
-      encoding: 'UTF-8'
-    )
-  end
-
-  # always return json
-  res['Content-Type'] = 'application/json'
-  res['Cache-Control'] = 'no-cache'
-  res['Access-Control-Allow-Origin'] = '*'
-  res.body = JSON.generate(comments)
-end
-
-trap('INT') { server.shutdown }
-
-server.start