Neo4j GC2013 talk: copy original talk as starting point.
Neo4j GC2013 talk: make updates.

- date
- definition fragmenting
- switch definition and join meme order
- cut querying and Neo4j info sections; move our usage to after "what we learned"
- fix order of lessons learned bullet points
- update roadmap
- change email to @fiftythree
Neo4j GC2013 talk: add Dave shout-out.