eventmachine/eventmachine — pull request #542 by Eric-Guo (2014-10-06 13:47:25+00:00)
Title: Can using rake-compiler higher version, even possible to compile in windows.

Fix Issue #536, #531, detail how to do can see

http://blog.cloud-mes.com/2014/10/06/compile-eventmachine-1-dot-0-3-in-ruby-2-dot-1-3-on-windows/