gentleman/proxy error in example and code

[eGGshke]

cli.Use(proxy.Set([]string{"http://proxy:3128", "http://proxy2:3128"}))
This is from example but in code proxy.Set accept map[string]string with parameters by url schema, and same proxy.
It's all nothing - but there is one nuance, map take a schema by request schema. It's not good, but you can adapt.
But map can only contain unique keys. So we can use only 1 proxy per 1 scheme. This is not good.