This is the Update Site for the Eclipse BPMN2 Modeler Project.
You can install the BPMN2 Modeler plug-ins from the eclipse Help -> Install New Software... menu:
You will need a build of the 3.7 (Indigo) Eclipse SDK for your platform and that's it. Then define a new Eclipse update site with the following location:
http://download.eclipse.org/bpmn2-modeler/sitePlease note that the update from this location will include all necessary Eclipse components like BPMN2 Metamodel, EMF, Graphiti, GEF, etc.