README moved to markdown

Shane -- I've just made some small edits to this repo, primarily in the README.  Github likes to have the README as a README.mkd (markdown) or README.textile file.  TBH, I'm getting better at markdown, but still have to refer to the cheat sheet to help me edit files. (I use this one a lot: https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet#wiki-emphasis)  This makes it a little nicer for the casual reader.  Of course, feel free to edit the content if you like -- it's just a suggestion.

I also added a .gitignore file, which is generally a good practice.  It is especially helpful keeping out log files, test coverage files and the like that are constantly changing and can cause unneeded conflicts if working with other developers.  For now, it's only keeping out .DS_Store files from Mac OS X, but there are references to other potential candidates down the line and a link to an article on gitignore files that might be helpful.

Qapla'

Prof. H