C++ GET/POST, Diceapp and python diceapp

C++ GET/POST, plus diceapp. Also added READMEs for all sections with how to install/use the libraries used in the programs.

@bdonald25 
May want to define this URL string stub as a constant at the top of the file and use it down here.  In this way, it will be easier for anyone who needs to change this URL to find it as they won't have to scroll through the file.