Merge pull request #146 from ably/rtn20-disconnecting-fix

fix(RTN20): DISCONNECTING -> DISCONNECTED

textile/features.textile

@@ -520,7 +520,7 @@ h3(#realtime-connection). Connection
 ** @(RTN15d)@ Client libraries should have test coverage to ensure connection state recovery is working as expected by forcibly disconnecting a client and checking that messages published on channels are delivered once the connection is resumed
 ** @(RTN15e)@ When a connection is resumed, the @Connection#key@ may change and will be provided in the first @CONNECTED@ @ProtocolMessage#connectionDetails@ when the connection is established. The client library must update the @Connection#key@ value with the new @connectionKey@ value every time
 * @(RTN20)@ When the client library can subscribe to the Operating System events for network/internet connectivity changes:
-** @(RTN20a)@ When @CONNECTED@, @CONNECTING@ or @DISCONNECTING@, if the operating system indicates that the underlying internet connection is no longer available, then the client library should immediately transition the state to @DISCONNECTED@ with emit a state change with an appropriate @reason@. This state change will automatically trigger the client library to attempt to reconnect, see @RTN15@ above
+** @(RTN20a)@ When @CONNECTED@ or @CONNECTING@, if the operating system indicates that the underlying internet connection is no longer available, then the client library should immediately transition the state to @DISCONNECTED@ with emit a state change with an appropriate @reason@. This state change will automatically trigger the client library to attempt to reconnect, see @RTN15@ above
 ** @(RTN20b)@ When @DISCONNECTED@ or @SUSPENDED@, if the operating system indicates that the underlying internet connection is now available, the client library should immediately attempt to connect
 ** @(RTN20c)@ When @CONNECTING@, if the operating system indicates that the underlying internet connection is now available, the client should restart the pending connection attempt
 * @(RTN16)@ @Connection@ recovery: