Merge pull request #8 from Eric-Guo/master

upgrade yeti to version 3.1.1
Use Twitter's official sass bootstrap
Updated readme
Use a variable for web fonts
Merge pull request #9 from aaronjwood/master

Use Twitter's official bootstrap-sass package
Bump version
Add darkly
Add superhero
Merge pull request #12 from paradox41/master

Add Darkly and Superhero themes
Refactor web-font variable for Darkly & Superhero
Bump version
Update to directory path for bootstrap
Merge pull request #14 from dantreasure/master

Update to directory path for bootstrap
Update to 3.1.1 stylesheets care of @esbanarango's maintainance on bootswatch-rails
Parameterize web-font as a variable in appropriate themes
Update version
formatting cleanup in README.md
update our version and bootstrap dependency version to 3.2.0
update grunt dependencies
initial merge of maxim/bootswatch-rails 3.2.0