Added cleaning script
Updated README.md

Updated syntax to Markdown
Added instruction about running cleaning script
Improved script std output
Made `rm` silent with `-f`
Removed garbage from previous installation of new Torch
Added more locations where Torch could have put files
Much deeper cleaning action. I do remove everything (tnx to @soumith)
Merge pull request #17 from Atcold/cleaningScript

Cleaning script