chore(npm/travis): upgrade to npm 2.5 and require it via package.json

IgorMinar · IgorMinar · commit 825de1cdf2d1 · 2015-02-21T18:40:11.000-08:00
currently karma's dependencies don't install on node 0.12 or io.js so we'll just update npm in hope that that this will mitigate "cb() never called!" erorrs. See: https://travis-ci.org/angular/angular.js/jobs/51474043#L2181
diff --git a/.travis.yml b/.travis.yml
@@ -44,6 +44,7 @@ install:
   - npm config set spin false
   # Log HTTP requests
   - npm config set loglevel http
+  - npm install -g npm@2.5
   - time npm install
 
 before_script:
diff --git a/package.json b/package.json
@@ -5,6 +5,11 @@
     "type": "git",
     "url": "https://github.com/angular/angular.js.git"
   },
+  "engines": {
+    "node": "~0.10",
+    "npm": "~2.5"
+  },
+  "engineStrict": true,
   "devDependencies": {
     "angular-benchpress": "0.x.x",
     "benchmark": "1.x.x",
