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.
Neo4j GC2013 talk: add new and improved images!

- Thingdom graph sketches
- Webadmin screenshots
Neo4j talk: backport improvements from GC2013.

With a couple of tweaks:

- Change date back to Jan, but amend "–Nov".
- Keep Dave shout-out slide, for when the slides/video is up, but add note.
- Revert email to personal email.

And remove GC2013 slides now.
Merge branch 'develop' into gh-pages