add mod muc_presence_async
add mod muc_presence_async

zhuxiangkui/erl_tool,zhangchaoeasemob/erl_tool,zhuxiangkui/erl_tool,wcy123/erl_tool,wcy123/erl_tool,zhuxiangkui/erl_tool,wcy123/erl_tool,zhuxiangkui/erl_tool,wcy123/erl_tool,zhangchaoeasemob/erl_tool,zhangchaoeasemob/erl_tool,zhuxiangkui/erl_tool,zhangchaoeasemob/erl_tool,zhangchaoeasemob/erl_tool,wcy123/erl_tool