Merge pull request #8 from jcypret/master

Allow gem to work with Rails 4.1.0
Update README.md
Update README.md
Update gemspec

Allow the gem to work with the 3.1 line of simple_form.
Merge pull request #10 from delynn/patch-1

Update gemspec
bump version
update Gemfile
Add Travis support
Update README
Fix Rakefile