added simple event handler.

client.go

@@ -13,4 +13,12 @@ const (
 type Client struct {
 	Token  string
 	Socket gowebsocket.Socket
+
+	// Functions
+	OnReadyFunction func()
+}
+
+// On Ready event will run when websocket connection is started and bot is ready to work.
+func (c *Client) OnReady(fn func()) {
+	c.OnReadyFunction = fn
 }