Project template and install scripts

@arrouse @sixstringtheory Here's the project template and install script from hack day if you guys wanna take a look.

Just FYI if you still have any of the file templates or snippets installed in the Xcode.app bundle, you should delete them before running the script. The script installs them in the `~/Library/Developer/Xcode directory` so they will show up as duplicates if you don't delete the other ones.