Fixed metadata on USBHost

Close #5

libraries/USBHost/library.properties

@@ -2,7 +2,7 @@ name=USBHost
 version=1.0
 author=Arduino
 maintainer=Arduino <info@arduino.cc>
-sentence=Allows the communication with USB peripherals like mice, keyboards, and thumbdrives. For Arduino DUE only.
-paragraph=The USBHost library allows an Arduino Due board to appear as a USB host, enabling it to communicate with peripherals like USB mice and keyboards. USBHost does not support devices that are connected through USB hubs. This includes some keyboards that have an internal hub.
+sentence=Allows the communication with USB peripherals like mice, keyboards, and thumbdrives. For Arduino Due and Zero.
+paragraph=The USBHost library allows the board to appear as a USB host, enabling it to communicate with peripherals like USB mice and keyboards. USBHost does not support devices that are connected through USB hubs. This includes some keyboards that have an internal hub.
 url=http://arduino.cc/en/Reference/USBHost
 architectures=samd