Bundlerisation + Gemspecification + Version Bump

Few things we need to integrate RKelly in our pre-ruby 2.0 tests:

- Added Gemspec so we can use ```gem rkelly, git: ...```
- Added racc development dependency
- Fixed tests running without Hoe
- Reworked Rakefile to get rid of Hoe
- Added racc generated file to git order to simplify Gem build (seems to be the way to integrate racc generated file to gem)

We have also bumped the version because it integrates some fixes (at least the one that fixes RKelly with ruby 2.0) and changed the gem name so we can start using it properly in our stack.