Add a base fiddle for mocked data requests with Ember Data
Removed unused resolver from ManyArray.fetch
Makes sure extractArray is normalizing each record in the array instead of trying to normalize the whole payload as an object.

This was causing `applyTransforms` to do the transforms in properties of the array instead.
Merge pull request #1953 from bmac/fix-extract-array-miguel

Makes sure extractArray is normalizing each record in the array instead ...
Use keyForRelationship in JSONSerializer's serializeHasMany method

- serializeBelongsTo uses the same already
Merge pull request #1954 from emberjs/JSONSerializerKeyForHasMany

Use keyForRelationship in JSONSerializer's serializeHasMany method
[BUGFIX] store.fetchMany should always return a promise.
Merge pull request #1955 from emberjs/fetchManyAlwaysReturnsAPromise

[BUGFIX] store.fetchMany should always return a promise.
Merge pull request #1942 from duereg/master

Removed unused resolver from ManyArray.fetch
Merge pull request #1941 from mehulkar/base-fiddle

Add a base fiddle for mocked data requests with Ember Data
Add test of synchronous hasMany for the FixtureAdapter