Improve the message when app.yaml isn't found
Improve the message when app.yaml isn't found

asendecka/djangae,trik/djangae,asendecka/djangae,trik/djangae,armirusco/djangae,asendecka/djangae,stucox/djangae,martinogden/djangae,SiPiggles/djangae,armirusco/djangae,nealedj/djangae,wangjun/djangae,chargrizzle/djangae,jscissr/djangae,chargrizzle/djangae,pablorecio/djangae,armirusco/djangae,potatolondon/djangae,grzes/djangae,grzes/djangae,jscissr/djangae,SiPiggles/djangae,leekchan/djangae,pablorecio/djangae,martinogden/djangae,grzes/djangae,nealedj/djangae,SiPiggles/djangae,nealedj/djangae,potatolondon/djangae,pablorecio/djangae,martinogden/djangae,b-cannon/my_djae,leekchan/djangae,leekchan/djangae,jscissr/djangae,wangjun/djangae,trik/djangae,wangjun/djangae,stucox/djangae,kirberich/djangae,stucox/djangae,kirberich/djangae,chargrizzle/djangae,kirberich/djangae