a d3js and Angular project

#To run: #

1. clone
2. from the root directory of the repo, execute grunt build
3. run the app out of the dist folder by opening index.html or by hosting the contents of the dist folder in a web server.
4. profit

#TODO:#

1. currently a problem with the way I pull XML elements' attribute KEYS vs attribute PROPERTIES
2. need an algorithmic way to cause conntected graphs to be layed out as linearly as possible. In a perfect world, there would be two nodes and one node would be at the top of the graph and one would be at the bottom, but in general the non-tree graph is more complicated. In any case, the gravity used by the d3js force-connected graph is probably going to need to be handled manually.