Return warnings as arrayref

lib/SugarTrail/Template/Slave.pm

@@ -41,15 +41,7 @@ sub warnings {
     foreach my $step (@{$self->{steps}}) {
         push @warnings, $_ foreach @{$step->{warnings}};
     }
-    my $warnings = "";
-    if (@warnings) {
-        $warnings .= "---\n# SUGAR-TRAIL WARNINGS #\n\n";
-        foreach (@warnings) {
-            $warnings .= "> warning: $_\n";
-        }
-        $warnings .= "---\n\n";
-    }
-    return $warnings;
+    return \@warnings;
 }