add Unique-Indexing
return a simple-object if a cypher-result contains exact one column

eg:  result.getSingleResult().as(String.class));

fixing issue #21
Merge pull request #42 from tbaum/unique-node

add Unique-Indexing
Merge pull request #40 from tbaum/master

code improvement
#25 more precise mapping proposal for typed, qualified and unqualified relations
#25 minor refactoring of metadata provider
- fixed typo
Merge branch 'master' of https://github.com/buschmais/cdo-neo4j

# By Dirk Mahler
# Via Dirk Mahler
* 'master' of https://github.com/buschmais/cdo-neo4j:
  #25 minor refactoring of metadata provider
  #25 more precise mapping proposal for typed, qualified and unqualified relations
- fixed typo
- fixed typo
Merge pull request #45 from BluWings/master

fixed typo
Merge pull request #43 from tbaum/simple-cypher

return a simple-object if a cypher-result contains exact one column