Hey there,
I've been upgrading NGUI in my projects by opening up a sample scene from the project that you have in GitHub and exporting a package from there, deleting the old NGUI, and importing the package I just made.
Is there a better process to upgrade NGUI, or is that how we need to be doing it? Your readme says upgrade by just pulling latest from the repo, but that would only work if I had the NGUI repo submoduled into my own.