adding facebook login
Merge branch 'contributions' of github.com:barterli/barterli_android into contributions
Merge branch 'contributions' of github.com:barterli/barterli_android into contributions
Merge branch 'contributions' of github.com:barterli/barterli_android into contributions
added login through facebook
Merge branch 'contributions' of github.com:barterli/barterli_android into contributions
facebook integration
Merge branch 'contributions' of github.com:barterli/barterli_android into contributions