Update runvistrails.py to allow flags
Update runvistrails.py to allow flags

This was written specifically for running from from the shortcut or from
double-clicking a .vt file, but when running from the command-line,
people should be using this instead of run.py (and therefore it should
work).

VisTrails/VisTrails,VisTrails/VisTrails,minesense/VisTrails,minesense/VisTrails,VisTrails/VisTrails,VisTrails/VisTrails,VisTrails/VisTrails,minesense/VisTrails,minesense/VisTrails,minesense/VisTrails