add method and protocol options

Author: respectTheCode

lib/index.js

@@ -19,10 +19,20 @@ module.exports = function (options) {
 				return;
 			}
 
-			datadog.histogram(stat, (new Date() - req._startTime), 1, [
+			var statTags = [
 				"route:" + req.route.path,
 				"path:" + req.path
-			].concat(tags));
+			].concat(tags);
+
+			if (options.method) {
+				statTags.push("method:" + req.method.toLowerCase());
+			}
+
+			if (options.protocol && req.protocol) {
+				statTags.push("protocol:" + req.protocol);
+			}
+
+			datadog.histogram(stat, (new Date() - req._startTime), 1, statTags);
 		};
 
 		next();