feat(cinny): add ansible role

roles/cinny/docs/tarball.md

@@ -0,0 +1,13 @@
+# `cinny` deployment from a tarball
+
+The role supports just downloading and extracting a tarball, which can
+then be served with a webserver of your own choice.
+
+When `cinny_deployment_method` is set to `tarball`, the directory
+`cinny_dist_path` (defaults to `/opt/cinny/src/dist`) needs to be
+served at the desired URL.
+
+Additionally, the following equivalent rules to
+[the sample docker+nginx configuration](https://github.com/cinnyapp/cinny/blob/dev/docker-nginx.conf)
+are needed for the webapp to work properly. For hosting in a path
+like `/app`, set `cinny_config_hash_router_basename`.