Fix Readme travis link
Fix Readme travis link

Was reporting that the build was failing if the most recent build was red, regardless of what branch
AaroC357/scalding,tdyas/scalding,AaroC357/scalding,jzmq/scalding,tresata/scalding,sunilrebel/scalding,sriramkrishnan/scalding,chrismoulton/scalding,AaroC357/scalding,sunilrebel/scalding,tresata/scalding,rubanm/scalding,rubanm/scalding,cchepelov/scalding,sunilrebel/scalding,f7753/scalding,piyushnarang/scalding,piyushnarang/scalding,cchepelov/scalding,jzmq/scalding,twitter/scalding,jzmq/scalding,tglstory/scalding,soundcloud/scalding,piyushnarang/scalding,tdyas/scalding,soundcloud/scalding,benpence/scalding,f7753/scalding,sriramkrishnan/scalding,chrismoulton/scalding,sriramkrishnan/scalding,benpence/scalding,twitter/scalding,rubanm/scalding,f7753/scalding,chrismoulton/scalding,tglstory/scalding,tglstory/scalding,tdyas/scalding,twitter/scalding,benpence/scalding,cchepelov/scalding,tresata/scalding,soundcloud/scalding