Added Slim gem
Using Slim instead of erb to make it more readable
Made the site a little responsive. More changes to be made though.
Media query at 720px not really laid out.
Revert "Added Slim gem"

This reverts commit 4ff1f9f8325c7dbcea706f1b145e52c254b4b258.

reverting this commit
Merge branch 'master' of https://github.com/sinatra/sinatra-recipes