Merge pull request #1612 from tchak/attrs-options-key

attars with options should allow for key option
Clean up the DS.Store docs
Merge pull request #1618 from bmac/store-docs

Clean up the DS.Store docs
Enable building on Windows.

Updates `ember-dev` to 87bc398.

Thanks to @brzpegasus for tracking this down!
Merge pull request #1619 from rjackson/enable_building_on_windows

Enable building on Windows.
Update the DS.Adapter documentation
Merge pull request #1617 from bmac/adapter-docs

Update the DS.Adapter documentation
add DS.Errors object