Bootstrap 3

Bootstrap 3 has RC'ed, so we need to get ready-(ish) to push an update.

`gem 'bootstrap-sass', github: 'thomas-mcdonald/bootstrap-sass', branch: '3'`

Please comment on issues here rather than in new issues. +1's will be deleted with vengeance. I make no guarantees about the frequency of updates or responses here.

Stuff we have to work on for release:

- [ ] Icon font compatibility with Rails (√) & Compass (?) - modify functions as appropriate
- [ ] Update Compass manifest *need to check*
- [x] Update patch script (*fixed with new converter*)
- [x] Split docs up
- [ ] Sass compatibility & documentation - manual installation as copy and paste from download as zip
- [ ] move to @twbs