Update Doc

Author: epsilonrt

README.md

@@ -1,10 +1,6 @@
 # Modbus Library for Arduino
 Allows your Arduino to communicate via Modbus protocol
 
-<a href="https://modbus.org/">
-  <img src="https://github.com/epsilonrt/modbus-arduino/raw/master/extras/modbus.png" alt="Modbus Logo" align="right" valign="top">
-</a>
-
 [![GitHub release (latest by date including pre-releases)](https://img.shields.io/github/v/release/epsilonrt/modbus-arduino?include_prereleases)](https://github.com/epsilonrt/modbus-arduino/releases) 
 [![Framework](https://img.shields.io/badge/Framework-Arduino-blue)](https://www.arduino.cc/)
 
@@ -16,6 +12,10 @@ Allows your Arduino to communicate via Modbus protocol
 
 ---
 
+<a href="https://modbus.org/">
+  <img src="https://github.com/epsilonrt/modbus-arduino/raw/master/extras/modbus.png" alt="Modbus Logo" align="right" valign="top">
+</a>
+
 The Modbus is a master-slave protocol used in industrial automation and can be used in other areas, such as home automation.
 
 The Modbus generally uses serial RS-232 or RS-485 as physical layer (then called Modbus Serial) and