Updated demo startup files to work more reliably and in vs2015#8

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Commits on Nov 5, 2015

the working path and directories for the demo scripts were fragile. revised the scripts and documentation so that the scripts run correctly in the project parent directory
tqwhite
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an error message appears when this Visual Studio 2013 project is run in Visual Studio 2015. The fix is easy and this documents it.
tqwhite
committed