added whole system from ola4doc

sys/node_modules/es5-ext/object/is-plain-object.js

@@ -0,0 +1,20 @@
+'use strict';
+
+var getPrototypeOf = Object.getPrototypeOf, prototype = Object.prototype
+  , toString = prototype.toString
+
+  , id = Object().toString();
+
+module.exports = function (value) {
+	var proto, constructor;
+	if (!value || (typeof value !== 'object') || (toString.call(value) !== id)) {
+		return false;
+	}
+	proto = getPrototypeOf(value);
+	if (proto === null) {
+		constructor = value.constructor;
+		if (typeof constructor !== 'function') return true;
+		return (constructor.prototype !== value);
+	}
+	return (proto === prototype) || (getPrototypeOf(proto) === null);
+};