Review incubator-shenyu-client-golang #16 pr

[Lisandro]

Dear community:

 The  incubator-shenyu-client-golang has new  pr,please review the code.Here is 
this pr main function: README ZN Add Nacos use type
Adjust README CN same as ZN
Here is link   
https://github.com/apache/incubator-shenyu-client-golang/pull/16/files