This should be a really simple question :)
I have a project that works fine. Now I wanted to rename it and to change the path of the projectfolder. First it seemd simple
In Android studio 0.8.+, you can click F6 to move it.
F6
If you use 1.0.2 or higher, make sure you select the Project view for the Refactor -> Move menu option to become available.
Thanks to @DavidsAlias for pointing this out.