[NSString redpacketUserToken]:

http://community.easemob.com/article/825307886
参考这篇文章，自己动手，结果登录后报错；
 
+[NSString redpacketUserToken]: unrecognized selector sent to class 0x19e36a7e8

2016-07-01 17:51:04.529 HxChatDemo[9438:3491619] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[NSString redpacketUserToken]: unrecognized selector sent to class 0x19e36a7e8'

*** First throw call stack:

(0x180b22db0 0x180187f80 0x180b29b44 0x180b26bec 0x180a24c5c 0x1009433e0 0x10094290c 0x10018da0c 0x10018db58 0x180b28a60 0x180a20488 0x180a24db0 0x101469a7c 0x101469a3c 0x10146f4e4 0x180ad8d50 0x180ad6bb8 0x180a00c50 0x1822e8088 0x185ce2088 0x100228f60 0x18059e8b8)

libc++abi.dylib: terminating with uncaught exception of type NSException