make the Object.create assertion more specific
Merge pull request #2511 from emberjs/more-ie8-oo-create-fixes

make the Object.create assertion more specific
Add Test Coverage for `ember-data/transforms`

Transforms are not tested at the `unit` level. Adding tests at the
`unit` granularity allows for regression testing if the
implementation covered by the `acceptance` level tests should change.
Merge pull request #2509 from seanpdoyle/add-tests-number-transform

Add Test Coverage for `DS.NumberTransform`