Bug fixes

• Tweaked sidenav to support much longer paths for files

• Updated to Foundation 4 (#35)
• Source code is now hidden by default with a simple toggle to show it (#14)
• Most CSS and JS libraries are using CDN.js (#38)

Here is a screenshot of the new visuals:

• Updated the templates to work with jade >= 0.31
• Fixed a bug where it would try to write to a directory that didn't exist