re-organized visualization module
duplicate JS files removed
base visualization module cleaned up
SceneNode cleaned
updated version of roslib.js added
example instructions updated
minor cleanup of URDF loader
mesh/urdf loaders cleaned
Cylinder added back to URDF
old JS removed
docs and builds updated
old docs cleaned
URDF cleaned
URDF now uses options method to load
comments updated on URDF files
doc updated
rebuilt files
Merge pull request #8 from rctoris/groovy-devel

Major refactoring of URDF