cmd sf: Search for symfony console app in the current dir (2.X or 3.X) and run whichever has been found

.bashrc

sf() {
    if [ -f ./app/console ]; then
        ./app/console $@
        return $?
    fi;
    if [ -f ./bin/console ]; then
        ./bin/console $@
        return $?
    fi;
    echo "found neither ./app/console nor ./bin/console";
    return 1;
};