USBHost example : USBHostMSD, HID mouse and keyboard , support hub.

Dependencies:   USBHOST

Revision:
2:107b7b44bd35
Parent:
1:a12f904713ed
--- a/USBHOST.lib	Fri Feb 17 12:04:00 2017 +0000
+++ b/USBHOST.lib	Wed Apr 26 20:09:08 2017 +0000
@@ -1,1 +1,1 @@
-https://developer.mbed.org/teams/ST/code/USBHOST/#1c76b46ad779
+https://developer.mbed.org/teams/ST/code/USBHOST/#d3ac9e1c0035