DS.FixtureAdapter writes changes to FIXTURES
Integration test for DS.FixtureAdapter
Rename storeFixture
FixtureSerializer correctly serializes associations
Remove unused variable
Preventing from dirtying internals while creating a record with an existing id

[Fixes #768]
Merge pull request #728 from twinturbo/fixture-adapter-fixes

Fixture adapter commits changes
fix fixture adapter id generator

`generateIdForRecord` is called internally by ember on create
Cleaned unused variable
Merge pull request #782 from bobbus/clean-unused-var

Cleaned unused variable
Merge pull request #781 from tchak/fix-id-generator-fixture-adapter

fix fixture adapter id generator
Merge pull request #773 from tricknotes/remove-unused

Remove unused variable
Merge pull request #770 from Cyril-sf/bookkeeping

Preventing from dirtying internals while creating a record with an existing id