Update README.rst (#9)

t-persson · web-flow · commit 64f350b90273 · 2020-10-12T16:26:23.000+02:00
diff --git a/README.rst b/README.rst
@@ -2,6 +2,8 @@
 ETOS API
 ========
 
+.. image:: https://img.shields.io/badge/Stage-Sandbox-yellow.svg
+  :target: https://github.com/eiffel-community/community/blob/master/PROJECT_LIFECYCLE.md#stage-sandbox
 
 ETOS (Eiffel Test Orchestration System) API
 
