Add gulp-rimraf dep
Add gulp clean task to remove _site folder
Remove rake clean task as gulp clean exists
Remove default task as it is just an error message
Don't ignore gemfile
Add gemfile
Merge pull request #12 from JakeChampion/master

Remove `rake minify`
Merge pull request #13 from JakeChampion/rake-removal

Replaces `rake clean` with `gulp clean`
Merge pull request #14 from JakeChampion/gemfile

Adds a Gemfile