adding an rtm impl
adding an rtm impl

kylemsguy/limbo,TetraEtc/limbo,llimllib/limbo,wmv/slackbot-python,sentinelleader/limbo,rizaon/limbo,palachu/sdbot,uilab-github/slask,ruhee/limbo,mmisiewicz/slask,uilab-github/slask,Marclass/limbo,serverdensity/sdbot,shawnsi/limbo,dorian1453/limbo,michaelMinar/limbo,freshbooks/limbo,llimllib/limbo,signalnine/alanabot,TetraEtc/limbo,NUKnightLab/slask,UnILabKAIST/slask