updated travis config
updated travis config

removed openblockchain integrations and added secret room key for
hyperledger slack. the travis command-line client prettified the
content.

ariccy/fabric,ahuachen/fabric,JonathanLevi/fabric,andresgaragiola/fabric,gennadylaventman/fabric,adecaro/fabric,murali-katipalli-dtcc/fabric,JonathanLevi/fabric,openblockchain/obc-peer,bburgdave/fabric,ariccy/fabric,srderson/fabric,bburgdave/fabric,gromeroar/fabric,bren3582/fabric,murali-katipalli-dtcc/fabric,adecaro/fabric,JonathanLevi/fabric,ariccy/fabric,popldo/fabric,popldo/fabric,bren3582/fabric,isghe/obc-peer,angrbrd/fabric,itp4IBM/fabric,ariccy/fabric,gennadylaventman/fabric,JonathanLevi/fabric,gennadylaventman/fabric,tuand27613/obc-peer,angrbrd/fabric,ahuachen/fabric,gromeroar/fabric,gongsu832/fabric,jjjjibm/fabric,srderson/fabric,tuand27613/fabric,hyperledger-archives/fabric,gromeroar/fabric,ahuachen/fabric,murali-katipalli-dtcc/fabric,gongsu832/fabric,gennadylaventman/fabric,adecaro/fabric,srderson/fabric,ahuachen/fabric,gennadylaventman/fabric,isghe/obc-peer,JonathanLevi/fabric,gennadylaventman/fabric,tuand27613/fabric,bren3582/fabric,popldo/fabric,isghe/obc-peer,bren3582/fabric,itp4IBM/fabric,hyperledger-archives/fabric,popldo/fabric,srderson/fabric,adecaro/fabric,itp4IBM/fabric,jjjjibm/fabric,binhn/obc-peer,bren3582/fabric,andresgaragiola/fabric,adecaro/fabric,murali-katipalli-dtcc/fabric,angrbrd/fabric,ariccy/fabric,JonathanLevi/fabric,binhn/obc-peer,adecaro/fabric,tuand27613/fabric,itp4IBM/fabric,andresgaragiola/fabric,jjjjibm/fabric,andresgaragiola/fabric,adecaro/fabric,tuand27613/obc-peer,jjjjibm/fabric,openblockchain/obc-peer,andresgaragiola/fabric,itp4IBM/fabric,andresgaragiola/fabric,isghe/obc-peer,popldo/fabric,itp4IBM/fabric,andresgaragiola/fabric,isghe/obc-peer,angrbrd/fabric,jjjjibm/fabric,hyperledger-archives/fabric,ahuachen/fabric,murali-katipalli-dtcc/fabric,gromeroar/fabric,srderson/fabric,ariccy/fabric,bburgdave/fabric,bburgdave/fabric,bren3582/fabric,tuand27613/obc-peer,srderson/fabric,hyperledger-archives/fabric,tuand27613/fabric,ahuachen/fabric,gongsu832/fabric,hyperledger-archives/fabric,hyperledger-archives/fabric,angrbrd/fabric,ariccy/fabric,gromeroar/fabric,jjjjibm/fabric,bren3582/fabric,JonathanLevi/fabric,popldo/fabric,tuand27613/fabric,itp4IBM/fabric,angrbrd/fabric,gennadylaventman/fabric,popldo/fabric,gongsu832/fabric,srderson/fabric,tuand27613/fabric,murali-katipalli-dtcc/fabric,tuand27613/fabric,gromeroar/fabric,openblockchain/obc-peer,murali-katipalli-dtcc/fabric,jjjjibm/fabric,angrbrd/fabric,ahuachen/fabric,bburgdave/fabric,hyperledger-archives/fabric,binhn/obc-peer,gromeroar/fabric