Add front laser accessory to description.
Merge pull request #9 from jackal/front-laser

Add front laser accessory to description.
Add comment about accessory args.
0.3.0
Add dep for joint state controller.
Merge remote-tracking branch 'origin/indigo-devel' into indigo-devel

Conflicts:
	jackal_description/urdf/accessories/sick_lms100.urdf.xacro