Brian McKenna made Licentious, a useful webapp for those who forget to (or want to simplify the process to) license their GitHub repositories.
You can find it here. If there is a license you want to see added, drop an issue about it.
Great webapp if you forgot to add license to an existing repo :)
As a side note, grunt's init tasks or yeoman's generators are great time-savers and they generate lots of things beyond the license file.
It'll be better if it also simplifies the process of choosing a license, as we know there're so many license (for open source).