IO.js 2.2.1 发布，现已提供下载：io.js-2.2.1.zip
值得关注的变化如下：
http: reverts the removal of an undocumented
clientproperty on client connections, this property is being used in the wild, most notably by request which is used by npm. (Michaël Zasso) #1852.
更多内容请查看发行说明。
IO.js 是为 V8 引擎编写的基于事件 IO 的实现。
构建要求：
* `gcc` and `g++` 4.8 or newer, or
* `clang` and `clang++` 3.3 or newer
* Python 2.6 or 2.7
* GNU Make 3.81 or newer
* libexecinfo (FreeBSD and OpenBSD only)
引用来自“Wendal”的评论
又更新了, 果断编译android版引用来自“愣头鸟”的评论
这是什么节奏？？？