fu yabuyake / Mbed 2 deprecated USBKeyborad20190501

add programs

Dependencies:   mbed USBDevice

Diff: USBDevice.lib

Revision:
0:965ed9ce2a09
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBDevice.lib	Wed May 01 04:41:50 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/USBDevice/#53949e6131f6