Merge pull request #2 from LuckyLcm/master

20130504
added monitor
Merge branch 'master' of https://github.com/ChristianChen/Swallow

Conflicts:
	src/main/java/cn/swallowserver/nio/NIOSession.java
refactored session
refactored
change validLock to be final
deleted duplicated RequestHandler and updated some classes
Updated some classes
Merge pull request #4 from ChristianChen/master

The latest code