move mockfirebase into bower
Remove lodash dependency, update sauce config to use mockfirebase in bower
Merge pull request #396 from firebase/release_0.8.1_mockfb

move mockfirebase into bower
Update $$defaults processing to work better with FirebaseArray. Added additional test units.
Apply defaults to $FirebaseObject on init.
add test unit
Merge pull request #398 from firebase/kato

Update $$defaults processing to work better with FirebaseArray
Merged with release_0.8.1 branch