Graph layout script by Paul Harrison (pfh@logarithmic.net)

1. Function:
	This script is a connector between Velvet and GraphViz to allow the visualization 
	of Velvet's de Bruijn graphs.

2. Pre-requisites: 
	You will need to install Python (www.python.org) and GraphViz (www.graphviz.org).

3. Running the script:
	> python graph2.py <velvetdir/Graph >graph.dot
	> neato -Tpng graph.dot >graph.png

