Move all neo4j dependencies to the neo4j-gremlin pom.xml
Merge remote-tracking branch 'origin/master'
Move giraph stuff in parent pom to giraph-gremlin.
Push netty elements in parent pom down to gremlin-driver.
Modify contributor list in the pom - limiting it to those who committed some "significant" piece of code.
added a section on in-depth implementations.