conf: added circus .init for nginx

Signed-off-by: rscnt <rascnt@gmail.com>

configs/circus.nginx.ini.example

@@ -0,0 +1,7 @@
+[watcher:nginx]
+cmd = /usr/sbin/nginx -c ./nginx.dynamicweb.conf
+numprocesses = 1
+use_sockets = False
+copy_env = True
+singleton = True
+autostart = {{ RUN_WEB | default('True') }}