Adds app.json to use Heroku Review Apps feature
Adds app.json to use Heroku Review Apps feature

gumanoz/catarse,devton/catarse,rokibulhassan/catarse,williamair1/catarse,diegorv/catarse,catarse/catarse,vandofb/catarse,globalavocado/catarse,diegorv/catarse,diraulo/catarse,mrmarcondes/catarse,Haseeb-Qureshi/catarse,ujjwalkhanal/helpbegin,sushant12/jvn,Saharitte/catarse,ujjwalkhanal/helpbegin,globalavocado/catarse,adrianob/catarse,sushant12/jvn,adrianob/99gamers,stephenhack/yhacks,wlads/catarse,thiagocatarse/catarse,JamesUcci/webapplication,coopsource/catarse,diraulo/catarse,gumanoz/catarse,juanmanunez/catarse,adrianob/catarse,victor95pc/catarse,thiagocatarse/catarse,vicnicius/catarse,Saharitte/catarse,catarse/catarse,devton/catarse,diegorv/catarse,paulopatto/catarse,coopsource/catarse,devton/catarse,rokibulhassan/catarse,adrianob/99gamers,paulopatto/catarse,andrewyong82/100pp,williamair1/catarse,nicolasiensen/labcriativo,danielweinmann/catarse,ripple0328/catarse,gumanoz/catarse,mrmarcondes/catarse,nicolasiensen/labcriativo,williamair1/catarse,umeshduggal/flockaway,juanmanunez/catarse,Haseeb-Qureshi/catarse,diraulo/catarse,sushant12/jvn,nicolasiensen/labcriativo,ripple0328/catarse,Haseeb-Qureshi/catarse,JamesUcci/webapplication,Saharitte/catarse,adrianob/catarse,juanmanunez/catarse,victor95pc/catarse,ujjwalkhanal/helpbegin,umeshduggal/flockaway,vandofb/catarse,vicnicius/catarse,danielweinmann/catarse,victor95pc/catarse,wlads/catarse,andrewyong82/100pp,paulopatto/catarse,JamesUcci/webapplication,stephenhack/yhacks,paulopatto/catarse,catarse/catarse,devton/catarse,thiagocatarse/catarse,globalavocado/catarse,umeshduggal/flockaway,wlads/catarse,sushant12/jvn,vandofb/catarse,stephenhack/yhacks,mrmarcondes/catarse,ripple0328/catarse,adrianob/99gamers,rokibulhassan/catarse,vicnicius/catarse,andrewyong82/100pp,ripple0328/catarse,coopsource/catarse,ujjwalkhanal/helpbegin,catarse/catarse