llvm dev - Feb 2017 - opt-viewer demo

After seeing Adam's presentation on opt-viewer at the US dev conf 
late last year, I decided to whip up a quick demo project to show how it 
works.  There's a continuous integration config file (Travis CI) that 
serves as a reference for its use.

     https://github.com/androm3da/optviewer-demo

Here's the analysis that was done on CPython v3.6.0:

    https://androm3da.github.io/optviewer-demo/output_analysis/cpython/

-Brian