anchor.diff:      case Member of
   	[To|_]->pg2:join(Channel),
   		self()!subscribed;
  -	{error,_} ->self()!error
  +	{error,_} ->lager:info("Unavailable")
       end,
   	{ok,State};
   
  
positive.code: 
      Member = pg2:get_members(Channel),
      case Member of 
  	[Channel|_]->Channel!{Channel,Msg};
  	{error,_}-> failed
      end,
      {ok,State};
  
  
negative.code:     Member = pg2:get_members(To),
      case Member of
  	[To|_]-> lists:foreach(fun(N)->pg2:join(N) end),
  		 To!subscribed;
  	{error,_}-> self()!error
      end,
      {ok,State};
  