BerryBots demo

Haven't had a chance to look into coding anything for it thus far, but I tried building it from source under linux.

To get it to build I had to add "-ldl" to the linker flags and replace extern char *getcwd(char *buf, size_t size); with #include <unistd.h> in bbutil.cpp

There's an issue where sometimes the fonts/text is way too thick and just looks like blobs, but otherwise it seems to work nicely. I tried the precompiled one to check if the issue exists there, but that build depends on glew 1.6 when my system uses glew 1.8.