better instructions for checkout

I had to do to the following to do a checkout. It would be cool if the wiki was updated:
$ git clone git://github.com/fehaar/FFWD-Templates.git
$ cd FFWD-Templates
$ cat .gitmodules
[submodule "FFWD"]
        path = FFWD
        url = git://github.com/fehaar/FFWD.git

$ git submodule init
$ git submodule update
