Make CloseCode enum public
Make CloseCode enum public

Since they get passed to the websocketDidDisconnect delegate method,
making them public means that the codes can be switched against without
needing magic numbers.

pvzig/Starscream,nuclearace/Starscream,daltoniam/Starscream,daltoniam/Starscream,nuclearace/Starscream,pvzig/Starscream,nuclearace/Starscream,daltoniam/Starscream