added error-maker dependency

lib/error.js

@@ -1,11 +1,5 @@
 "use strict";
 
-module.exports = function (msg){
-	var error = Error.call (this, typeof msg === "object" ? msg.message : msg);
-	Error.captureStackTrace (error, this.constructor);
-	Object.defineProperty (error, "name", {
-		enumerable: false,
-		value: "PropertiesError"
-	});
-	return error;
-};
+var make = require ("error-maker");
+
+module.exports = make ("PropertiesError");

package.json

@@ -8,6 +8,9 @@
 	"engines": {
 		"node": ">=0.10"
 	},
+	"dependencies": {
+		"error-maker": "*"
+	},
 	"devDependencies": {
 		"ini": "1.1.x",
 		"speedy": "*",