Copy of sphinx install docs. Closes #251
Copy of sphinx install docs. Closes #251

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