added information about setting up travis-ci environment variables
added information about setting up travis-ci environment variables

sep/ollert,larryprice/ollert,leviwilson/ollert,sep/ollert,larryprice/ollert,leviwilson/ollert,nschmidtg/simpla,larryprice/ollert,nschmidtg/simpla,sep/ollert,leviwilson/ollert,nschmidtg/simpla