rDock cavity definition - generate the active site definition needed for rDock docking

rdock_rbcavity

Version	Tool Shed	Owner	Galaxy instances where the tool is available
2013.1-0+galaxy0	toolshed.g2.bx.psu.edu	bgruening	usegalaxy.eu usegalaxy.no usegalaxy.org
0.1	toolshed.g2.bx.psu.edu	bgruening	usegalaxy.be usegalaxy.eu