Add Versaloon Software Framework (event-driven incremental software framework for Embedded Systems)

README.md

@@ -341,6 +341,7 @@ Computer Vision
 * [async](https://github.com/eerimoq/async) - Asynchronous framework in C for systems where low memory usage is important.
 * [Protothreads](http://dunkels.com/adam/pt/) - Provide linear code execution for event-driven systems implemented in C designed for severely memory constrained systems, such as small embedded systems or wireless sensor network nodes.
 * [EventOS](https://github.com/natnqweb/EventOS) - Event based system designed for Arduino Framework.
+* [vsf](https://github.com/vsfteam/vsf) - Versaloon Software Framework - a tiny preemptive-capable event-driven incremental software framework for Embedded Systems.
 
 
 ## User Interface