[ZODB-Dev] RelStorage moved to Github

[Shane Hathaway]

By popular request, I've moved RelStorage development from svn.zope.org 
to Github [1].  This should make it easier for the ZODB developer 
community to contribute and submit issues.  Happy hacking!

Also, I've created a "zodb" community on github.  If you'd like to move 
or create your ZODB-centric project there, just ask.

[1] https://github.com/zodb/relstorage

Shane