Added throw-error utility.

utils/throw-error.js

@@ -0,0 +1,11 @@
+'use strict';
+
+function throwError(message, params) {
+    var error = new Error(message);
+    for (var key in params) {
+        error[key] = params[key];
+    }
+    throw error;
+}
+
+module.exports = throwError;