WIP($translate): teaching $translate asynchronicity
WIP(): $translate tests
Async translations with multiple fallback languages
wip(): teaching $translate asynchronicity
Merge branch 'fallback-languages' of https://github.com/Sanjo/angular-translate into sanjo

* 'fallback-languages' of https://github.com/Sanjo/angular-translate:
  Async translations with multiple fallback languages
Documented the new code for async translations with multiple fallback languages
Failing test for: it should load a fallback language asynchrously only once
Merge branch 'fallback-languages' of https://github.com/Sanjo/angular-translate into sanjo

* 'fallback-languages' of https://github.com/Sanjo/angular-translate:
  Failing test for: it should load a fallback language asynchrously only once
  Documented the new code for async translations with multiple fallback languages
fix missing semicolon
fix fallback languages flattened
Merge pull request #307 from tspaeth/fallback-languages

fixing fallback languages a bit
wip()
wip()
wip()
wip()
chore($translate): cleans up refresh() method
wip()
fix(*): jshint fixes
Merge branch 'fallback-languages' into canary

* fallback-languages:
  fix(*): jshint fixes
  wip()
  chore($translate): cleans up refresh() method
  wip()
  wip()
  wip()
  wip()
  fix missing semicolon fix fallback languages flattened
  Failing test for: it should load a fallback language asynchrously only once
  Documented the new code for async translations with multiple fallback languages
  wip(): teaching $translate asynchronicity
  Async translations with multiple fallback languages
  WIP(): $translate tests
  WIP($translate): teaching $translate asynchronicity
chore(uses): Rename uses -> use

Rename `uses` method to `use` on both `$translate` and `$translateProvider`

BREAKING CHANGE: API of both $translate and $translateProvider is changed. To migrate you
have to change all `uses` method call to `use`

Before:

$translate.uses('en');
$translateProvider.uses('en');

After:

$translate.use('en');
$translateProvider.use('en');
Merge pull request #323 from DWand/uses-to-use

chore(uses): Rename uses -> use