Readme update (added reference to mailing list & IRC channel)
Readme update (added reference to mailing list & IRC channel)

guaguadev/redash,denisov-vlad/redash,denisov-vlad/redash,44px/redash,EverlyWell/redash,ninneko/redash,M32Media/redash,hudl/redash,akariv/redash,moritz9/redash,vishesh92/redash,alexanderlz/redash,getredash/redash,alexanderlz/redash,chriszs/redash,imsally/redash,44px/redash,getredash/redash,44px/redash,M32Media/redash,useabode/redash,akariv/redash,chriszs/redash,denisov-vlad/redash,guaguadev/redash,alexanderlz/redash,moritz9/redash,getredash/redash,chriszs/redash,44px/redash,moritz9/redash,jmvasquez/redashtest,rockwotj/redash,chriszs/redash,EverlyWell/redash,hudl/redash,M32Media/redash,stefanseifert/redash,hudl/redash,rockwotj/redash,amino-data/redash,EverlyWell/redash,getredash/redash,amino-data/redash,rockwotj/redash,rockwotj/redash,denisov-vlad/redash,imsally/redash,akariv/redash,getredash/redash,pubnative/redash,denisov-vlad/redash,imsally/redash,EverlyWell/redash,jmvasquez/redashtest,easytaxibr/redash,crowdworks/redash,easytaxibr/redash,crowdworks/redash,pubnative/redash,useabode/redash,alexanderlz/redash,akariv/redash,amino-data/redash,akariv/redash,stefanseifert/redash,jmvasquez/redashtest,stefanseifert/redash,jmvasquez/redashtest,pubnative/redash,vishesh92/redash,pubnative/redash,imsally/redash,guaguadev/redash,guaguadev/redash,easytaxibr/redash,jmvasquez/redashtest,moritz9/redash,easytaxibr/redash,vishesh92/redash,stefanseifert/redash,pubnative/redash,ninneko/redash,useabode/redash,crowdworks/redash,useabode/redash,ninneko/redash,M32Media/redash,amino-data/redash,vishesh92/redash,ninneko/redash,easytaxibr/redash,ninneko/redash,stefanseifert/redash,crowdworks/redash,hudl/redash,guaguadev/redash