- moved regions_from_graph into wed_modular - documented all functions and cleaned up
- moved regions_from_graph into wed_modular
- documented all functions and cleaned up

spreg-git/pysal,darribas/pysal,chhao91/pysal,jlaura/pysal,spreg-git/pysal,weikang9009/pysal,schmidtc/pysal,TaylorOshan/pysal,dfolch/pysal,lixun910/pysal,ljwolf/pysal_core,lixun910/pysal,pastephens/pysal,sjsrey/pysal_core,nathania/pysal,jlaura/pysal,dfolch/pysal,ljwolf/pysal_core,darribas/pysal,sjsrey/pysal,hasecbinusr/pysal,hasecbinusr/pysal,chhao91/pysal,badjr/pysal,schmidtc/pysal,sjsrey/pysal_core,pastephens/pysal,ljwolf/pysal,ljwolf/pysal,nathania/pysal,hasecbinusr/pysal,pysal/pysal,ljwolf/pysal,ljwolf/pysal_core,badjr/pysal,jlaura/pysal,TaylorOshan/pysal,pedrovma/pysal,lanselin/pysal,lixun910/pysal,pastephens/pysal,TaylorOshan/pysal,sjsrey/pysal_core