chore(docs): replace local bootstrap build with one from bower

Author: matsko

bower.json

@@ -1,13 +1,12 @@
 {
   "name": "AngularJS",
   "devDependencies": {
-
     "jquery": "~1.10.2",
     "lunr.js": "~0.4.3",
     "open-sans-fontface": "~1.0.4",
     "google-code-prettify": "~1.0.1",
-
     "closure-compiler": "https://closure-compiler.googlecode.com/files/compiler-20130603.zip",
-    "ng-closure-runner": "https://raw.github.com/angular/ng-closure-runner/v0.2.3/assets/ng-closure-runner.zip"
+    "ng-closure-runner": "https://raw.github.com/angular/ng-closure-runner/v0.2.3/assets/ng-closure-runner.zip",
+    "bootstrap": "~3.1.1"
   }
 }