- adding notes about coordinate assumptions for distance based weights derived    from shapefiles
- adding notes about coordinate assumptions for distance based weights derived 
  from shapefiles

tectronics/pysal,Alwnikrotikz/pysal,tectronics/pysal,Alwnikrotikz/pysal,AlanZatarain/pysal,AlanZatarain/pysal,AlanZatarain/pysal,tectronics/pysal,Alwnikrotikz/pysal