Test version

Revision:
0:4be500de690c
diff -r 000000000000 -r 4be500de690c mbed-os.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Tue Mar 20 02:09:21 2018 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#16bac101a6b7b4724023dcf86ece1548e3a23cbf