Changes to use external doodle3d-client package instead of submodule.
Remove www submodule (see http://stackoverflow.com/questions/1260748/how-do-i-remove-a-git-submodule#comment13902193_1260982).
Merge branch 'feature/printerdriver' of github.com:Doodle3D/doodle3d-firmware into feature/printerdriver