Merge pull request #126 from hmottestad/master

Fixed a cyclical error when flushing an error and flushing fails.
fixed issue where connection exception would cause infinite exception callbacks
fixed maven build
don't try to respond on any ioexceptions. we saw another infinite barf of excpetions in one of our apps - not sure of the exact cause - but I don't think there's any reason to try to respond after an IOException
Removed (defunct) bitdeli badge
Merge branch 'upstream/master'

Conflicts:
	src/main/java/org/webbitserver/netty/NettyHttpChannelHandler.java
	src/main/java/org/webbitserver/netty/NettyHttpResponse.java