Added the pysal badge as comment in README.md
Added the pysal badge as comment in README.md

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