Updated Readme.md for Ubuntu 12.04 & fixed issues
Updated Readme.md post discussions with rchatley
Update README.md
Merge pull request #27 from neomatrix369/master

 Updated Readme.md for Ubuntu 12.04 & fixed issues
Takes care of rounding errors

Both Math.cbrt() and Math.sqrt() return floats with rounding
errors. Rounding off to 4 digits precision seems to be good enough and
makes the specs pass.
Uses Hamls built in html escaping
Merge pull request #28 from valtech/master

Small bugfixes
Set the correct root for playing the game
Use `public_dir` instead of `public`
Add rake tasks for warmup and play