Merge pull request #7 from akovaski/master

Add Type and Timestamp to ClipboardEvent struct
Updated README.md

Signed-off-by: Jacky Boen <aqiank@gmail.com>
Added an SysWMInfo example

Signed-off-by: Jacky Boen <aqiank@gmail.com>
Fixed WaitEvent()

Signed-off-by: Jacky Boen <aqiank@gmail.com>