Merge pull request #135 from amorgner/0.12-neo4j-2.0

0.12-neo4j-2.0.2
Merge pull request #136 from amorgner/0.12-neo4j-2.0

Use graph-collections 0.7.2 for Neo4j 2.0.2
Prepared release 0.13 for Neo4j 2.1:
Removed dependency to graph-collections and moved classes needed by spatial to this repo (rtree package and ReferenceNodes class).
Removed repository reference (was needed for graph-collections)
Merge branch 'master' into 0.13-neo4j-2.1
Prepare release 0.13-neo4j-2.1.2
Merge pull request #141 from amorgner/0.12-neo4j-2.0

0.12-neo4j-2.0.3
Updated README.md

- New github location neo4j-contrib/spatial
- Download links to plugin for versions 2.0.2 - 2.1.2
- Updated version in pom.xml examples
Merge branch 'master' into 0.13-neo4j-2.1

Conflicts:
	pom.xml
Merge branch '0.12-neo4j-2.0' of github.com:neo4j-contrib/spatial into 0.12-neo4j-2.0

Conflicts:
	README.md
Merge branch '0.12-neo4j-2.0'
Merge branch '0.13-neo4j-2.1'
Updated README.md: Github location
Merge pull request #148 from amorgner/master

Merged recent changes from release branches