Update SimpleKeyboard_HID.ino

add description

Author: bboyho

Firmware/SimpleKeyboard_HID/SimpleKeyboard_HID.ino

@@ -1,3 +1,14 @@
+/* HID KeyBoard Example
+   by: Jim Lindblom
+   date: 1/12/2012
+   license: MIT License - Feel free to use this code for any purpose.
+   No restrictions. Just keep this license if you go on to use this
+   code in your future endeavors! Reuse and share.
+
+   This is very simplistic code that allows you to send a 'z' with
+   a momentary pushbutton. 
+ */
+
 #include <Keyboard.h>
 int buttonPin = 9;  // Set a button to any pin