removed .DS_Store

It got committed before you had a `.gitignore`, `git rm -f .DS_Store`
to get rid of it. You probably want to add this to your global git
ignore though:
http://www.freshsauce.co.uk/tech+bits/git-ignore-dsstore-files-globally-
per-user_28
removed compass

right now, compass isn't doing anything, just causing problems, you may
want to add this back later.
added a Gemfile for bundler

[Gemfiles are
cool](http://media.tumblr.com/tumblr_lkyg04XRDt1qhbc9u.gif). run
`bundle install` to get all the gems you need.
updated to new sinatra

you were running an old version of sinatra, run `bundle install` then
`bundle exec ruby basic.rb` to make sure you're on the latest sinatra