add redirection to controller guide, including redirect/2 and redirect/3
add redirection to controller guide, including redirect/2 and redirect/3

CultivateHQ/phoenix_guides,mobileoverlord/phoenix,michalmuskala/phoenix,trarbr/phoenix,gjaldon/phoenix,mydearxym/phoenix_guides,mschae/phoenix,korobkov/phoenix,optikfluffel/phoenix,pap/phoenix,tianyi33/phoenix_guides,iguberman/phoenix_guides,bsmr-erlang/phoenix,bsmr-erlang/phoenix,Gazler/phoenix,tokafish/phoenix_guides,optikfluffel/phoenix,jeffkreeftmeijer/phoenix_guides,phoenixframework/phoenix,fblecha/phoenix_guides,jwarwick/phoenix,trarbr/phoenix,rafbgarcia/phoenix,stevedomin/phoenix,larrylv/phoenix_guides,nshafer/phoenix,0x00evil/phoenix,rafbgarcia/phoenix,nshafer/phoenix,mobileoverlord/phoenix,keathley/phoenix,thetamind/phoenix_guides,Kosmas/phoenix,optikfluffel/phoenix,Gazler/phoenix,pap/phoenix,tuvistavie/phoenix_guides,0x00evil/phoenix,phoenixframework/phoenix,evax/phoenix,gjaldon/phoenix,mitchellhenke/phoenix,eksperimental/phoenix,nshafer/phoenix,ugisozols/phoenix_guides,jwarwick/phoenix,mschae/phoenix,leikind/phoenix_guides,stevedomin/phoenix_guides,eksperimental/phoenix,evax/phoenix,0x00evil/phoenix,keathley/phoenix,stevedomin/phoenix,philss/phoenix_guides,rafbgarcia/phoenix,pap/phoenix-guides,dmarkow/phoenix,phoenixframework/phoenix,greyhwndz/phoenix_guides,michalmuskala/phoenix,mitchellhenke/phoenix,dmarkow/phoenix,korobkov/phoenix,sakishum/phoenix_guides,bratsche/phoenix_guides,Kosmas/phoenix,3quarterstack/phoenix_guides,clessg/phoenix_guides,Joe-noh/phoenix,wsmoak/phoenix_guides,Joe-noh/phoenix,1ternal/phoenix_guides,phoenixframework-Brazil/phoenix_guides,oldfartdeveloper/phoenix_guides