Does not work when using SOCKS5 proxy

Solution:

In eapilib.go, http.Transport is being initialized to set TLSClientConfig. Adding one line would resolve this issue.

```
func (conn *HTTPSEapiConnection) send(data []byte) (*JSONRPCResponse, error) {
...
tr := &http.Transport{
+ Proxy: http.ProxyFromEnvironment, // adding this line resolves the issue
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
}
```

Request you to make this change.

Refer to `DefaultTransport` in https://golang.org/pkg/net/http/

Open eapilib.go and inspect HTTPSEapiConnection.send, where http.Transport is initialized with TLSClientConfig. Read the net/http DefaultTransport and ProxyFromEnvironment documentation first; done means requests honor the configured SOCKS5 proxy environment settings.

Written by the indexing model from the issue text.