Calculate the hop matrix.
Do as calculation in a separate pass
Fix bug (iptoint before lookup)
Make hops output pretty (by AS string)
Get rid of extra ,
Merge pull request #2 from hawkinswnaf/master

Bring main repo up-to-date with my local changes.
speed ups for hops.py, add parmeters to hops.py, generate diagrams of major AS-hops