Fix warnings about meta-raspberrypi during update

As pointed out by tasslehoff on IRC it should probably be:
	danny,HEAD
and not:
	master,danny
in layers.txt.
Merge pull request #11 from dm8tbr/master

Fix for issue #9
Merge branch 'master' of git://github.com/Angstrom-distribution/setup-scripts

Conflicts:
	sources/layers.txt