tutorial5: Added examples
Added LICENCE file (for gr_modtool)
fixed copyright headers
removed diff, simplified algorithm
Added chat blocks
CMake uses globs for grc examples
Added chat app example
Updated chat_app grc example
tutorial4: relocating files to examples/tutorial4
Merge pull request #2 from kaushik84/master

tutorial4: relocating files to examples/tutorial4
added tutorial 2 files
Chat App now uses my qpsk demod
Fixed QA and XML bindings
minor bug fixes (XML and gray code disabled output)
argh, actually fixed that xml instead of breaking it
added tagged version of qpsk demod
Review of Tutorial7
qa test code added
Merge pull request #3 from kaushik84/master

qa test code for my qpsk module added
.xml .cc modified to support Gray Coding parameter + CMakefiles modified to include qa test