Fixed README.txt > README.md - you know the drill

Basically a duplicate of Moppy's README.md, but with the list of improvements and the cool slanted ASCII art. (I thought it was more appropriate for the _advanced_ one to have the slanted text, so I changed Moppy's art to the default figlet font).
Merge pull request #56 from felixphew/patch-3

Fixed README.txt > README.md - you know the drill