Initial commit

Extract C++ FFMPEG wrapper (aka AvCpp) from LiveTranscoder source tree.

Tested with FFMPEG 2.0

TODOs:
 * remove all deprecates in Filter module
 * doxygen docs
 * manuals
 * uint tests
 * good examples

Help and suggestions is welcomed.
Merge branch 'master' of github.com:h4tr3d/avcpp