Feed spec improvements

* Improve test descriptions
* Improve detection of promise rejections
* Use services for test setup instead of API – only use the API when
  we are testing something.
Update docs
Remove Angular app

Will replace with React, probably.
Tidy up
Add Sublime project to repo
Fix DI/Traceur conflict

As per https://github.com/angular/di.js/issues/62
Ignore npm-debug.log
Add start instructions
Update docs
Use tabs for Sublime project file

Automatically converted by ST
Update to Plumber v0.4 (with patches)
Update docs
Fix tabs
ES6ify tests

This fixes the tests because they were running di.js from source.