Merge pull request #17 from jeremypearson/master

Create .gitignore file.
Add RDASCIIFont.h
Merge branch 'master' of https://github.com/QUT-EESS-org/libRobotDev
Add a #include preprocessor directive for
RDPinDefs.h in RDBluetooth.h.
Write more documentation for the project.