Added License to webrtc samples.
Added License to webrtc samples.

edited the description that goes on top of source.
Updated LICENSE with apache license and also updated source headers.

Updated LICENSE with apache license and also updated source headers.
Revert "Updated LICENSE with apache license and also updated source headers."

This reverts commit 732a246fefd3ac4902a03f6d3d5d95578d60ef90.
Added new line to EOF for license
Merge pull request #47 from GoogleChrome/webrtc_add_licence

Added License to webrtc samples.