A copy of blinky example for demo

Revision:
0:e1d558cc79fa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Mon Apr 16 17:50:55 2018 +0000
@@ -0,0 +1,1 @@
+https://github.com/armmbed/mbed-os/#f9ee4e849f8cbd64f1ec5fdd4ad256585a208360