Merge pull request #22 from KnownSubset/master

Fix FixtureAdapter resolve of hasMany relationship on save
merged fix for FixtureAdapter hasMany (from @knownsubset)
Merge branch 'master' of github.com:danielspaniel/ember-data-factory-guy
Tests fixes from updating Ember-Data

The latest ember-data beta.9 was released with an issue where non-async
relationships were being resolved as promises.  This caused issues with
the tests.  Upgrading to the canary resolves the test failures.