Added rule ID reporting for rollups

Author: Sergey Chernyshev

src/formatters/compact.js

@@ -49,7 +49,7 @@ CSSLint.addFormatter({
 
         CSSLint.Util.forEach(messages, function(message) {
             if (message.rollup) {
-                output += filename + ": " + capitalize(message.type) + " - " + message.message + "\n";
+                output += filename + ": " + capitalize(message.type) + " - " + message.message + " (" + message.rule.id + ")\n";
             } else {
                 output += filename + ": " + "line " + message.line +
                     ", col " + message.col + ", " + capitalize(message.type) + " - " + message.message + " (" + message.rule.id + ")\n";