Merge pull request #92 from atungare/dev

Dev - refactor and cleanup
Edit neo4j addCheckins query to update old checkins without adding new nodes
write cypher query to generate list of stored checkins
Merge pull request #93 from gitMbar/dev

Edit neo4j addCheckins query to update old checkins without adding new n...
Merge branch 'dev' of https://github.com/gowaddle/waddle into dev