Cleanup and license the dongle drivers code

mbed-dongle-firmware/drivers/analog_button.h

@@ -13,11 +13,32 @@
  *  to translate to a binary value on threshold.
  *  Also encapsulates some HID Functionality.
  *
+ * Copyright (c) 2016 by Nick Bertoldi, Ben Heckathorn, Ryan O'Keefe,
+ *                       Adrian Padin, Timothy Schumacher
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
  */
+
 #ifndef ANALOG_BUTTON_H_
 #define ANALOG_BUTTON_H_
-#include <stdint.h>
 
+#include <stdint.h>
 
 template <class T>
 class AnalogButton {