extend javascripts app app.js
dashboard html template
add controllers for javascript

Note that, since we’re using the ngmin pre-minifier, we do not need to
inject the dependen- cies into our app.
make sure our new module is a dependency for our app module.

make sure our new module is a dependency for our app module.
Add in the Sign In link on the index.html.erb
Merge branch 'chapter2.1-integrate-app' into chapter2-angular-in-rails-asset-pipeline