Update readme again

README.md

 
 [Audio Adaptor Board](http://www.pjrc.com/store/teensy3_audio.html) for 16 bit stereo input and output.
 
-![Inputs][/gui/audioshield_inputs.jpg]  ![Outputs][/gui/audioshield_outputs.jpg]
+![Inputs](/gui/audioshield_inputs.jpg)      ![Outputs](/gui/audioshield_outputs.jpg)
 
 [Teensy 3.1](http://www.pjrc.com/store/teensy31.html) 12 bit DAC
 
-![DAC Output][/gui/dacpin.jpg]
+![DAC Output](/gui/dacpin.jpg)
 
-ADC Input
+[Teensy 3.1](http://www.pjrc.com/store/teensy31.html) or [3.0](http://www.pjrc.com/store/teensy3.html) ADC Input
 
-![ADC Input][/gui/adccircuit.jpg]
+![ADC Input](/gui/adccircuit.jpg)
 
-PWM Output
+[Teensy 3.1](http://www.pjrc.com/store/teensy31.html) or [3.0](http://www.pjrc.com/store/teensy3.html) PWM Output
 
-![PWM Output][/gui/pwmdualcircuit.jpg]
+![PWM Output](/gui/pwmdualcircuit.jpg)