added coveralls branch to travis for testing
added coveralls branch to travis for testing

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