Moved all the avatar bits to their own subdirectory.
Merge branch 'master' of https://github.com/worklist/hifi into pointy

Conflicts:
	interface/src/Application.h
Working on face rendering as point cloud.
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Working on mesh rendering for faces.
Merge branch 'master' of https://github.com/worklist/hifi into pointy

Conflicts:
	interface/src/avatar/Head.cpp
More work on face points.
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Track features on face, add a mode to render just key points.
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Removed keypoint stuff, fixed stupidity leading to fringed edges (was
linearly interpolating the missing values).
Working on integrating LibVPX for VP8 (9?) encoding.
First-pass finger motion trails
Working on transmitting and receiving the face video.
Merge branch 'master' of https://github.com/worklist/hifi into dev4
Most of the way towards working video encoding.
Now able to stream depth data.
Added libvpx library for OS X.
Merge branch 'master' of https://github.com/worklist/hifi into pointy

Conflicts:
	interface/src/Application.h
	interface/src/Audio.h
	interface/src/Webcam.cpp