Rtos API example

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+# ARM mbed OS
+ 
+mbed OS is an open-source embedded operating system designed for the "things" in the Internet of Things (IoT). mbed OS includes the features you need to develop a connected product using an ARM Cortex-M microcontroller.
+ 
+mbed OS provides a platform that includes:
+ - Security foundations.
+ - Cloud management services.
+ - Drivers for sensors, I/O devices and connectivity.
+
+mbed OS is modular, configurable software that you can customize it to your device and to reduce memory requirements by excluding unused software.
+
+ 
+## Release Notes
+
+The [Release Notes](https://docs.mbed.com/docs/mbed-os-release-notes/en/latest/) detail the current release and previous versions.
+
+## Continuous Integration Status
+
+We run continuous integration on all of our branches and pull requests to verify the stability of mbed OS. The following are the Travis CI indicators for mbed OS.
+
+ - Master branch [![Master Branch CI Badge](https://travis-ci.org/ARMmbed/mbed-os.svg?branch=master)](https://travis-ci.org/ARMmbed/mbed-os)
+ - Latest release [![Latest Tag CI Badge](https://travis-ci.org/ARMmbed/mbed-os.svg?branch=latest)](https://travis-ci.org/ARMmbed/mbed-os/branches)
+
+Tools coverage [![Coverage Status](https://coveralls.io/repos/github/ARMmbed/mbed-os/badge.svg?branch=master)](https://coveralls.io/github/ARMmbed/mbed-os?branch=master)
+
+## Getting Started for Developers
+ 
+You need [mbed CLI](https://github.com/ARMmbed/mbed-cli) to build mbed OS. For more details, read the [mbed OS Handbook](https://docs.mbed.com/docs/mbed-os-handbook/en/latest/).
+
+## Getting Started for Contributors
+ 
+We have a [Contributing and Publishing Guide](https://docs.mbed.com/docs/mbed-os-handbook/en/latest/cont/contributing/) in the mbed OS Handbook.