removed requirement for ES6 Promise, changed to callback
removed requirement for ES6 Promise, changed to callback

jwarwick/phoenix,keathley/phoenix,phoenixframework/phoenix,CultivateHQ/phoenix,nshafer/phoenix,bsmr-erlang/phoenix,nshafer/phoenix,dmarkow/phoenix,stevedomin/phoenix,ybur-yug/phoenix,pap/phoenix,michalmuskala/phoenix,mitchellhenke/phoenix,phoenixframework/phoenix,trarbr/phoenix,Joe-noh/phoenix,optikfluffel/phoenix,mitchellhenke/phoenix,cas27/phoenix,mobileoverlord/phoenix,eksperimental/phoenix,korobkov/phoenix,dmarkow/phoenix,evax/phoenix,stevedomin/phoenix,optikfluffel/phoenix,mschae/phoenix,rafbgarcia/phoenix,0x00evil/phoenix,jwarwick/phoenix,michalmuskala/phoenix,rafbgarcia/phoenix,keathley/phoenix,mschae/phoenix,bsmr-erlang/phoenix,rafbgarcia/phoenix,CultivateHQ/phoenix,cas27/phoenix,ybur-yug/phoenix,ericmj/phoenix,Kosmas/phoenix,pap/phoenix,jamilabreu/phoenix,0x00evil/phoenix,Ben-Evolently/phoenix,korobkov/phoenix,nshafer/phoenix,trarbr/phoenix,gjaldon/phoenix,Gazler/phoenix,ericmj/phoenix,gjaldon/phoenix,mobileoverlord/phoenix,eksperimental/phoenix,Joe-noh/phoenix,iStefo/phoenix,evax/phoenix,phoenixframework/phoenix,optikfluffel/phoenix,Gazler/phoenix,iStefo/phoenix,0x00evil/phoenix,Kosmas/phoenix,jamilabreu/phoenix