started build of providing a solution to allow multiple output formats from one ffmpeg call.
Merge branch 'refs/heads/master' into multiple-output
bug in example
updates to multi output from phpvideotoolkit. the basic ability to use MultiOutput now exists, however the functionality has not yet been fully checked.
added multiple output example in reference to #21
Merge branch 'refs/heads/master' into multiple-output
removed trace
Merge branch 'refs/heads/master' into multiple-output

Conflicts:
	src/PHPVideoToolkit/Media.php
implemented the output progress handler to handler multiple outputs
extended functionality of native progress handler to reflect default data changes
updated read me documentation concerning progress handlers
added progress handler portable to work with multi output
updated read me with multi output demo and fixed variable typeo in example script
Update README.md
made trace bigger to support probe output
bug fix for parsing multiple output when processing audio and video
bug fix for only encoding and parsing multiple audio output. ref #21
updated example to be more complex alteration of the video
added progress handler caveats into README
typo