Update README (and build process?) to be friendlier towards data viz

[kauffj]

It'd be cool if the README included a link to the chainquery SQL data structure in some kind of visualization tool.

(Not a priority)

[tiger5226]

This could certainly be done. YeD has an online tool that can be used with a link and a graphml reference. Graphml is an open source visualization format. Below is a groovy example of doing this.

https://gist.github.com/agea/6591881

We can do this by just creating a quick go app to read from a db connection and write a graphml file. This way anytime we change the db schema we can run this app to update the graphml file.