Update to deployment docs. 
Update to deployment docs. 

From  Paul Monson suggested edit on Readme.io I merged this into 0.7.2 on the website.
philss/phoenix_guides,CultivateHQ/phoenix_guides,wsmoak/phoenix_guides,0x00evil/phoenix,thetamind/phoenix_guides,bsmr-erlang/phoenix,nshafer/phoenix,clessg/phoenix_guides,eksperimental/phoenix,dmarkow/phoenix,nshafer/phoenix,Joe-noh/phoenix,nshafer/phoenix,0x00evil/phoenix,korobkov/phoenix,trarbr/phoenix,dmarkow/phoenix,jwarwick/phoenix,fblecha/phoenix_guides,korobkov/phoenix,evax/phoenix,rafbgarcia/phoenix,optikfluffel/phoenix,mschae/phoenix,stevedomin/phoenix,sakishum/phoenix_guides,phoenixframework/phoenix,phoenixframework-Brazil/phoenix_guides,0x00evil/phoenix,rafbgarcia/phoenix,leikind/phoenix_guides,gjaldon/phoenix,Gazler/phoenix,Joe-noh/phoenix,evax/phoenix,stevedomin/phoenix_guides,larrylv/phoenix_guides,michalmuskala/phoenix,mobileoverlord/phoenix,keathley/phoenix,ugisozols/phoenix_guides,oldfartdeveloper/phoenix_guides,keathley/phoenix,mobileoverlord/phoenix,Kosmas/phoenix,tokafish/phoenix_guides,mschae/phoenix,trarbr/phoenix,bsmr-erlang/phoenix,mitchellhenke/phoenix,stevedomin/phoenix,pap/phoenix,optikfluffel/phoenix,michalmuskala/phoenix,tuvistavie/phoenix_guides,pap/phoenix,eksperimental/phoenix,greyhwndz/phoenix_guides,pap/phoenix-guides,Gazler/phoenix,mitchellhenke/phoenix,Kosmas/phoenix,jwarwick/phoenix,mydearxym/phoenix_guides,gjaldon/phoenix,3quarterstack/phoenix_guides,1ternal/phoenix_guides,rafbgarcia/phoenix,bratsche/phoenix_guides,jeffkreeftmeijer/phoenix_guides,optikfluffel/phoenix,phoenixframework/phoenix,iguberman/phoenix_guides,phoenixframework/phoenix,tianyi33/phoenix_guides