Mention the disk usage script in the README. Minor change to the test…

… script to turn off all LEDs on start.

README.md

@@ -48,3 +48,9 @@ While the script is running, the LEDs on the LED array PCB should illuminate one
 ## Images
 
 ![RPi LED Array inside](https://raw.github.com/prizepony/rpi-ledarray-eagle/master/img/rpi_ledarray_inside.jpg)
+
+## Additional Scripts
+
+In the "code" folder exists a variety of scrips that make use of the Raspberry Pi LED array:
+
+showDiskUsage.sh - Displays the Raspberry Pi's disk usage

code/testLEDarray.sh

@@ -14,11 +14,17 @@ REV=2
 
 PINS=(4 17 27 22 18 23 24 25 8 7)
 
+# initialize all LEDs
+for i in "${PINS[@]}"
+do
+	echo "$i" > /sys/class/gpio/export
+        echo "in" > /sys/class/gpio/gpio$i/direction
+done
+
 # turn on all LEDs in order
 for i in "${PINS[@]}"
 do
 	# toggle LED
-	echo "$i" > /sys/class/gpio/export
 	echo "out" > /sys/class/gpio/gpio$i/direction
 	echo "0" > /sys/class/gpio/gpio$i/value
 	echo -n "#"