Add fritzing schematics

README.md

 $ cp config.h.example config.h # and edit it with SSID and Password for the AP (pick something hard to guess)
 ```
 
-Upload to the Huzzah board, and connect it to [HC-SR04](https://www.sparkfun.com/ultrasonic-distance-sensor-hc-sr04.html) distance sensor:
+Upload to the Huzzah board, and connect it to [HC-SR04](https://www.sparkfun.com/ultrasonic-distance-sensor-hc-sr04.html) like this:
 
-* gnd to gnd
-* 3v3 to vcc
-* 12 to trig
-* 13 to echo
-
-_[to do: fritzing diagram]_
+![Scematic diagram](HuzzahAPDistance/HuzzahAPDistance_bb.png)
 
 
 #### Test distance sensor server