- contacts download and display avatars
https://github.com/openpeer/opandroid/issues/88

- image caching services caches files properly
https://github.com/openpeer/opandroid/issues/89

https://s3.amazonaws.com/uploads.hipchat.com/36194/252108/hpo4tA2xOZkvfo7/Screenshot_2014-02-21-15-27-57.png
Merge branch '20140204-federated-android' of https://github.com/openpeer/opandroid into 20140204-federated-android

# By Vladimir Morosev
# Via Vladimir Morosev
* '20140204-federated-android' of https://github.com/openpeer/opandroid:
  - java classes for audio/video driver components included in build, added SurfaceView for video capture preview in Media Test App