Fix small inconsistency in example.
Merge pull request #16 from darabos/patch-1

Fix small inconsistency in example.
Added helper function UnderlyingConn to retrieve net.Conn from Conn objects.
Merge pull request #21 from longsleep/underlyingConn

Added helper function UnderlyingConn to retrieve net.Conn from Conn objects.
Add file watcher example.
Various improvements to README files.
Implement Upgrader API (#6).
Use new Upgrader API in examples
Support "Sec-Websocket-Protocol" for old-style "Upgrade" calls.
Moved Upgrader code to server implementation.
Renamed constants to match Go style guidelines.
Updated Origin check.
The host in the Origin header must match the host of the request by default.
Moved Upgrader variable to package level.
Removed unnecessary call to "http.Error".
Simplified returning of errors.
Make subprotocol negotiation more flexible.
Updated docs.
Relicense to the Gorilla WebSocket Authors.
Improve comparison with other packages in readme.
Cleanup issues reported by golint.