Ted Lin / Mbed OS Nucleo_key_led_with_mbed_os

implement button press/release with double check using mbed OS

Diff: mbed-os.lib

Revision:
0:4ff16441b862
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Sun Aug 28 12:29:03 2016 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#d2202045ac8f2fc63836a5b7131c9b56ac58f06a