Fixed library.properties for Mouse and Keyboard libraries

Author: cmaglie

library.properties

@@ -4,6 +4,6 @@ author=Arduino
 maintainer=Arduino <[email protected]>
 sentence=Allows an Arduino board with USB capabilites to act as a Keyboard. For Leonardo/Micro only
 paragraph=This library plugs on the HID library. It can be used with or without other HID-based libraries (Mouse, Gamepad etc)
-category=USB
+category=Device Control
 url=http://www.arduino.cc/en/Reference/Keyboard
 architectures=*