MT#62949 release_dashboard README

Change-Id: I8c053b3e4a46e62ee6fae3be8acb8b01ce1942df

release_dashboard/README.md

@@ -0,0 +1,12 @@
+release_dashboard
+=================
+
+dashboard for:
+
+* build releases: [build app](../build)
+* docker images:
+  we can trigger the proper jenkins job to rebuild Dockerfiles at any ``DOCKER_PROJECTS``
+* hotfixes: triggers the proper jenkins job for ``PROJECTS``
+* gerrit: info related to tags needed for hotfixes
+
+There's some [javascript logic](release_dashboard/static/release_dashboard/js)