Added REUSE badge to README

Signed-off-by: Rob Tjalma <[email protected]>

Author: Rob Tjalma

README.md

@@ -1,3 +1,5 @@
+[![REUSE status](https://api.reuse.software/badge/github.com/com-pas/compas-sct)](https://api.reuse.software/info/github.com/com-pas/compas-sct)
+
 # System Configuration Tool (SCT) components
 
 Interested in contributing? Please read carefully the [CONTRIBUTING guidelines](https://github.com/com-pas/contributing/blob/master/CONTRIBUTING.md).