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 
Just to clarify... what are these 'bunch of letters' - are they truly arbitrary?  Where do they show up on rSENSE?  Would it be better to ask for a more specific thing?