The readme files have not been updated for this stabilization release. Currently, there is no supported integration with Eventlist, or any other events program. The Groupjive developers will be providing an API that will allow people to extend Groupjive however they like, but they are not promising to provide any specific integration for us, with the exception of Kunena for forums.
Please also note that this current incarnation of groupjive is only to make it stable (eg, get rid of bugs, make it work). There is no new "features" being added. The devs will then be looking at a complete re-write using the CB API