Mbed / Mbed OS rtos_threading_with_callback

Added simple threading example with callbacks from Thread.h in mbed-os 5.3.2

Diff: mbed-os.lib

Revision:
0:d4b2a035ffe3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Thu Jan 12 23:54:51 2017 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#2885c1b41e63158cb6faf5f107cd821ae06ef26c