Rtos API example

Revision:
0:9fca2b23d0ba
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/tools/test/examples/pr.tmpl	Sat Feb 23 12:13:36 2019 +0000
@@ -0,0 +1,4 @@
+Please test this PR
+
+If successful then merge, otherwise provide a known issue.
+Once you get notification of the release being made public then tag Master with {{ tag }} .