Added Index and PID to Track.cs; Refactoring and cleanup
Added FFMPEG.TXT for info on muxing PCM and mapping tracks w/ FFmpeg
Updated FFMPEG.TXT w/ how to concatenate .M2TS files
Removed unused 'using' lines in Program.cs
Updated FFMPEG.TXT
Added BDAutoMuxer/Builds folder w/ v0.4.9.0a as reference while refactoring
Major refactoring of solution.  Moved core functionality into BDAutoMuxerCore, ProcessUtils, and DotNetUtils projects.
Added NEbml project