initial pass at retina icons - its crufty as no original photoshop to work with
Merge branch 'master' into retina-icons

* master:
  Removed Code Signing
  Fixed screenshots auto-uploading
  Use curl (through CURLHandle) to upload files over FTP
  setting generated zip file permissions to 644 by default instead of 600 so that webservers can read the file
  setting default for new installs to filename + hash
  removing erroneus function from using interface builder
  adding ability to set filename to hash (old style), filename or filename + hash
  adding xcode gitignore
updated icons and retina set from PSD
adding menubar psd file for updates
Adding initial Sparkle code and public Key (private key to be shared via a secure method to @michaelvillar)
enabling sparkle update checks by default
adding sparkle update url - This is a proof of concept test url and may not be the final Updater URL
Merge pull request #14 from anthonysomerset/retina-icons

Retina icons
Added @2x images in the project
Updated readme
merging sparkle-updater with master
Bumping Version to 2.1 and update of Update feed URL