Change phoenix to phx in installation guide (#683)
Change phoenix to phx in installation guide (#683)


stevedomin/phoenix,bsmr-erlang/phoenix,rafbgarcia/phoenix,michalmuskala/phoenix,Kosmas/phoenix,jwarwick/phoenix,korobkov/phoenix,evax/phoenix,0x00evil/phoenix,phoenixframework/phoenix,mobileoverlord/phoenix,phoenixframework/phoenix,Joe-noh/phoenix,Gazler/phoenix,rafbgarcia/phoenix,optikfluffel/phoenix,mobileoverlord/phoenix,nshafer/phoenix,keathley/phoenix,mitchellhenke/phoenix,rafbgarcia/phoenix,Kosmas/phoenix,eksperimental/phoenix,gjaldon/phoenix,trarbr/phoenix,optikfluffel/phoenix,michalmuskala/phoenix,gjaldon/phoenix,dmarkow/phoenix,Joe-noh/phoenix,pap/phoenix,eksperimental/phoenix,0x00evil/phoenix,nshafer/phoenix,mschae/phoenix,bsmr-erlang/phoenix,mschae/phoenix,keathley/phoenix,korobkov/phoenix,optikfluffel/phoenix,evax/phoenix,0x00evil/phoenix,phoenixframework/phoenix,Gazler/phoenix,stevedomin/phoenix,trarbr/phoenix,jwarwick/phoenix,pap/phoenix,dmarkow/phoenix,nshafer/phoenix,mitchellhenke/phoenix