Update 'README.md'

added picture robotic fish

README.md

@@ -26,15 +26,17 @@ The Arduino controller 10009 with io expansion shield on the Omni4WD  is Duemila
 Script for controlling the Nexus with ROS.
 
 - **RoFish**
- a CPG-based locomotion control example of a robotic fish, implemented on the Arduino.
+A CPG-based locomotion control example of a robotic fish.
+
+![ ](figures/animation.gif  "Robotic Fish")
 
 - **adaptiveFreqOsc**
-An Adaptive Frequency Oscillator example with the Arduino.
+An adaptive frequency oscillator example with Arduino.
 
 ## Libraries
 
 - **NativeDDS**:
-A library containing a software implemented Direct Digital Synthesizer. 
+A library for implementing a Direct Digital Synthesizer in software. 
 
 - **TrueRMS**
 A library for calculating the average, rms and power of DC+AC input signals, measured with the ADC.