Release for eXist-db 3.0RC2

Note, this release of the appified geospatial index for eXist-db 3.0.RC2+ covers the changes of eXist-db since initial release for RC1+.

Initial release of the appified geospatial indexing module

Note, you need a 3.0.RC1+ build of eXist-db for indexing apps to work.