adding license and limitation sections

Author: amx-piap

3rd-party-licenses.md

@@ -0,0 +1,4 @@
+Third Party Licenses
+====================
+
+This repository does not directly contain 3rd party source code. 

README.md

@@ -259,3 +259,15 @@ Connect the devices via an Ethernet switch and power them on, then  run the comm
 After some time  two rqt windows should appear with sensors data histograms.
 
 ![Demo_Screenshot](images/demo_screenshot.png)
+
+
+## License
+
+This repository is open-sourced under the Apache-2.0 license. See the LICENSE file for details.
+
+For a list of other open-source components included in this repository, see the
+file [3rd-party-licenses.txt](./3rd-party-licenses.md)
+
+## Known Issues/Limitations
+
+There are no known limitations.