Added iCloud support

[MaximiliumM]

Hey, jsbain!

I downloaded gitview and one thing I noticed was it didn’t work with the Pythonista’s iCloud folder. I spent some time reading through your code and I finally got it working. Now the dropdown goes through the local documents folder and the iCloud’s documents folder searching for .git repositories.

I hope you accept this pull request so other people can enjoy this new feature! :D

And thanks for creating this awesome tool. I’ve been using it a lot!