Changed front page to have d3 graph

added the json file that the graph example code seems to use. I would
like to modify the graph to have only a few points. The center point to
link to my profile, then child node that link to my profiles on other
websites.
Nodes that link to websites

I have coloured node that will link to websites I have profiles on. I
have spcified attributes for the force of the diagram. This changes link
distance, friction and charge. Charge is a very low value - it might
need to be made slightly less low. I commented out by avatar since it is
not being loaded properly... Still need to fix centre node to be bigger.
Need to put images inside the nodes