Adding unit test for full2W method
Adding unit test for full2W method

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