Merge pull request #3 from kraffslol/master

Fix URL Shortener to use is.gd in the short term
Update README.md
dropping support for Mac OSX < 10.8
Merge branch 'master' of github.com:FileShuttle/fileshuttle

* 'master' of github.com:FileShuttle/fileshuttle:
  Update README.md
  Fix URL Shortener
Stop constantly bringing window to front.

Fixes #6
Remove NSWindow notifications code block
Merge pull request #1 from SkyTrix/master

Fullscreen fix