Add debug flag

client.go

@@ -21,6 +21,7 @@ type (
 		accessToken string
 		userAgent   string
 		Client      *http.Client
+		debug       bool
 	}
 
 	Result struct {
@@ -102,6 +103,12 @@ func WithUserAgent(userAgent string) func(*Client) {
 	}
 }
 
+func WithDebug(debug bool) func(*Client) {
+	return func(c *Client) {
+		c.debug = debug
+	}
+}
+
 func NewClientWithUserAgent(accessToken string, userAgent string) *Client {
 	tr := &http.Transport{
 		//TLSNextProto: make(map[string]func(authority string, c *tls.Conn) http.RoundTripper),