Fix typo
Merge pull request #562 from sly7-7/patch-1

Fix typo
Allow setting plurals via adapter config API
Make Ember Data objects promises
Update Ember with RSVP 1.1
Trigger didLoad on init on already loaded objects
Put var declaration in correct spot
Fixes several embedded bugs.

1. Ensure that embedded records returned in
   payloads containing multiple records (e.g.,
   in responses to queries or "find alls") are
   extracted.
2. Make sure that loading records with embedded
   data multiple times is handled correctly.
Fix Unload + belongsTo
Unload + belongsTo fix