initial transforms in place
added xtion frames to urdf
Merge branch 'master' of https://github.com/strands-project/scitos_common
adding new model and xtion frames
Merge branch 'master' of https://github.com/cburbridge/scitos_common into head_transforms

Conflicts:
	scitos_description/urdf/scitos.xacro
Merge branch 'master' of https://github.com/strands-project/scitos_common
Merge branch 'master' into head_transforms
using new model, adding in head transformations..
Merge pull request #19 from cburbridge/master

new meshes, head transforms