Adding data processing script.
Adding a service to extract a subgraph of a certain radius, centered on one emailer.
Returning a D3-canonical graph data structure from emailers service.
Added an enron app with very basic functionality.
Looser layout.

Special sentinel message if no email address.
Do not return email results with a missing correspondent.
Added color coding by distance from center.
Using minifed d3 script file.
Abstracted "get value range from mongo" behavior from flickr app into util function.
Adding some basic controls to the enron app.
Replaced hard-coded lookup with lookup from controls.
Merge branch 'enron'