Add Setting up ES6 info

ericdouglas · web-flow · commit 6a0ded30a002 · 2016-06-27T10:03:53.000-03:00
diff --git a/README.md b/README.md
@@ -19,7 +19,7 @@ Topic | Books | Price | Release
 :-- | :-- | :--: | :--:
 Learn JavaScript | [Eloquent JavaScript](http://eloquentjavascript.net/) | :free: | December 2014
 ES6 | [Exploring ES6](http://exploringjs.com/es6/) | :free: | -
-Tooling | [Setting up ES6](https://leanpub.com/setting-up-es6/read)
+Tooling | [Setting up ES6](https://leanpub.com/setting-up-es6/read) | :free: | January 2016
 Testing | [JavaScript Testing Recipes](http://jstesting.jcoglan.com/) | :free: | March 2014
 DOM | [DOM Enlightenment](http://domenlightenment.com/) | :free: | February 2013
 Functional Programming | [JavaScript Allongé, the "Six" Edition](https://leanpub.com/javascriptallongesix/read) | :free: | -
