don't override ajax, since its mostly identical other than cache settings.
Merge pull request #15 from Juvenal1228/master

Upgrade to ember-data 13 and ember.js RC4/5
test file cleanup
quick hack to fix the remaining regressions
upgraded to ember.js RC5
updated the readme to remove revision #
added pending issue (error handling)
cleaned up the ajax method (reused core ember-data)
Merge branch 'master' of https://github.com/toranb/ember-data-django-rest-adapter