Updated gemset.

  Removed Guard mainly because the guard gems for Jekyll were complete shit.
Removed the projects file (for now).
Updated Rack config (using this now).
Updated website a bit.

  * Fixed an regression with an older post due to 'jekyll-mentions'.
  * Made the site a bit more adaptive (read: targets two sizes, not fluid).
  * Added a copy of my résumé for those in search of it.
Updated site a bit.