documentation cleanup on network.analysis.py
documentation cleanup on network.analysis.py

hasecbinusr/pysal,pastephens/pysal,hasecbinusr/pysal,ljwolf/pysal_core,jlaura/pysal,TaylorOshan/pysal,sjsrey/pysal,ljwolf/pysal,ljwolf/pysal_core,ljwolf/pysal,pastephens/pysal,weikang9009/pysal,hasecbinusr/pysal,sjsrey/pysal_core,lixun910/pysal,TaylorOshan/pysal,jlaura/pysal,ljwolf/pysal_core,pedrovma/pysal,lixun910/pysal,TaylorOshan/pysal,sjsrey/pysal_core,jlaura/pysal,sjsrey/pysal_core,pastephens/pysal,ljwolf/pysal,pysal/pysal,lanselin/pysal,lixun910/pysal