adding Matt's SvoViewer
removed unused code
added copyright to files
Merge pull request #2139 from ZappoMan/SvoViewer

Svo viewer
Merge branch 'master' of https://github.com/worklist/hifi
fix debug output and add command line options
Merge pull request #2140 from ZappoMan/SvoViewer

fix debug output and add command line options
Merge branch 'master' of https://github.com/worklist/hifi
fixed text renderer and frame rate display
Merge pull request #2138 from PhilipRosedale/master

Travelling noises removed, audio bargraph removed, improve jitter rebuffer behavior
Merge pull request #2141 from ZappoMan/SvoViewer

fixed text renderer and frame rate display
merge
fix windows build
fix unix build
fix mac build
Merge pull request #2142 from ZappoMan/SvoViewer

fix windows build/cmake for SvoViewer
Merge branch 'master' of https://github.com/worklist/hifi
Wait until both head and body are loaded before rendering.  Closes #2145.
When switching models, retain old one until new one is loaded.  Closes #2146.
Added Freddy’s 50 cocktail party clips