A serializer implements `extractEmbeddedData` to retrieve embedded
associations data
Fixture id of zero should not be raise an undefined id property error.
Remove empty line.
Raise error for invalid fixture id types.
Update test to expect updated error message.
use ember-dev for uploading passing builds to s3

moves logic out of the Rakefile and reuses code in ember-dev.
Setup data without triggering materialization.
add unit test
cleanup RecordArray load method
Ensure that '_reference' key is used to store the reference
Added sensible defaults for keyForPolymorphicId and keyForPolymorphicType
Merge pull request #965 from ssured/master

Add sensible defaults for polymorphic keys
Merge pull request #964 from sandstrom/model-reference

Ensure that '_reference' key is used to store the reference
per type commit

group by adapter for type and then commit
Merge pull request #963 from tchak/per-type-commit-for-realz

per type commit
Merge pull request #945 from tchak/cleanup-record-array-load

cleanup RecordArray load method
Merge pull request #925 from mostlystatic/master

Fixture id of zero shouldn't be raise an undefined id property error
Merge pull request #871 from fivetanley/slim-s3-rake-task

use ember-dev for uploading passing builds to s3
reload/save operations on record resolve/reject
Merge pull request #930 from tchak/did-error-on-save

reload/save operations return a promise wich can resolve/reject