Modified WebSocketTransport.java to make it work with android

Changes taken from
https://github.com/Gottox/socket.io-java-client/issues/60
Changes to avoid handshake error.
Update WebsocketTransport.java
Update BasicExample2.java
comment on additions
disabled reconnection attempts
remove commented out code.
add information about the update in readme
fix disconnection onDisconnect and update examples to reflect
socketIO.unregister should not call onDisconnect since it is cleaning up.