Updated the Info.plist for Xcode [REDACTED] support.

Your work on this project, @insanehunter, has kept me from pulling out my hair over the past two years, so imagine my sadness (and partial hair loss) when I discovered it wouldn't work at all in the latest Xcode [REDACTED] preview v3 that was released this past Monday!

Evidently all that's usually needed is a modification to the `Info.plist` file to add support for specific Xcode version UUIDs — I've done so in this pull request.

If you'd like to merge this into master (or if you'd like to open a separate branch for Xcode 5 support; this should be backwards compatible, though), that would be amazing. And like I mentioned earlier: thank you for your work on this project. It solves a *major* inconvenience for me!