ruby-driver: update README
ruby-driver: update README

JerJohn15/concourse,karthikprabhu17/concourse,dubex/concourse,karthikprabhu17/concourse,Qunzer/concourse,chiranjeevjain/concourse,prateek135/concourse,aabdin01/concourse,aabdin01/concourse,savanibharat/concourse,hcuffy/concourse,cinchapi/concourse,chiranjeevjain/concourse,hcuffy/concourse,cinchapi/concourse,cinchapi/concourse,dubex/concourse,cinchapi/concourse,aabdin01/concourse,chiranjeevjain/concourse,vrnithinkumar/concourse,cinchapi/concourse,remiemalik/concourse,bigtreeljc/concourse,savanibharat/concourse,karthikprabhu17/concourse,vrnithinkumar/concourse,bigtreeljc/concourse,remiemalik/concourse,prateek135/concourse,kylycht/concourse,Qunzer/concourse,prateek135/concourse,karthikprabhu17/concourse,cinchapi/concourse,dubex/concourse,aabdin01/concourse,prateek135/concourse,kylycht/concourse,Qunzer/concourse,prateek135/concourse,chiranjeevjain/concourse,hcuffy/concourse,Qunzer/concourse,karthikprabhu17/concourse,aabdin01/concourse,JerJohn15/concourse,bigtreeljc/concourse,karthikprabhu17/concourse,kylycht/concourse,Qunzer/concourse,dubex/concourse,vrnithinkumar/concourse,savanibharat/concourse,kylycht/concourse,prateek135/concourse,JerJohn15/concourse,savanibharat/concourse,kylycht/concourse,remiemalik/concourse,bigtreeljc/concourse,JerJohn15/concourse,remiemalik/concourse,hcuffy/concourse,vrnithinkumar/concourse,hcuffy/concourse,chiranjeevjain/concourse,JerJohn15/concourse,hcuffy/concourse,dubex/concourse,bigtreeljc/concourse,aabdin01/concourse,savanibharat/concourse,Qunzer/concourse,vrnithinkumar/concourse,dubex/concourse,remiemalik/concourse,vrnithinkumar/concourse,JerJohn15/concourse,chiranjeevjain/concourse,savanibharat/concourse,bigtreeljc/concourse,remiemalik/concourse,kylycht/concourse