Specifying SCM Plugin Version and Adding Uncrustify .cfg

Setup Uncrustify here:
http://noiseandheat.com/blog/2012/01/uncrustifying-objective-c-source-in
-xcode-4/

I based my uncrustify script off of the one created by the
nah_xcode_uncrustify.rb script. I changed a few options, but the file
is largely the same as that one.