Add categories representation
Add grunt-connect-proxy
Use ActiveModelAdapter instead of FixtureAdapter
Refactor for application and index route/template
Add posts list page
Add filter for posts by category
Update newest version of Ember.js
Optimize some code for readability
Add a basic new post form
Clean up
Add a basic post route and template
Solve the issue that non-saved post will display
Make post route nested under posts route