Add GPGTools 2013.05.20
- tweaked for new uninstall syntax

Closes #350

Signed-off by: Fernando Paredes <nanoid.xd@gmail.com>
Merge pull request #802 from NanoXD/master

Add GPGTools 2013.05.20
- tweaked for new uninstall syntax

Signed-off by: Fernando Paredes <nanoid.xd@gmail.com>