Unicode fix

• munki-rebrand now properly rebrands with unicode characters in --appname

Rewrite to remove XCode Dependency

• Rebranding can now take place on an already-built munkitools pkg removing the need to have Xcode on your system
• munki_rebrand can download the latest munkitools release from Github, or work on a munkitools pkg of your choosing
• see the README.md for more information on what's changed

Munki 3 Compatibility

This release is fully compatible with Munki 3 and also includes the following new features:

• Added option to rebrand a locally altered codebase
• Added options to deal with building Munki for DEP
• Added option to sign resultant pkg

(thanks to @erikng)

• Now rebrands the MSCPasswordAlertController.py file (new in Munki 3)

Initial Rewrite Release

munki-rebrand has been completely rewritten and now accepts command line options rather than requiring the script itself to be edited.

Among the new features are:

• The ability to convert a 1024x1024 png to the required icns format on the fly
• Name of output pkg can be changed
• Git cloning/patching is all done in temporary directories and cleaned up post-run.