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 
But how do we know it worked?  Because it didn't crash?  This comment to me suggests that, so perhaps there should be some check to make sure the above code did in fact work before iterating over the fields.