Edits GitIntro/README.md

Adds some info to the GitIntro file, but it's not done yet.  It needs more info.  I'll have Nigle flesh it out some more.

README.md:
    I'd like this to be like our team 'homepage' of sorts.  I added a bit of information, but I feel like since it'll be the first page people see when looking at our team, we should all work together on it.  I'll mention it at our next meeting on Friday, and get some people to help me flesh it out a bit more.