Add Traefik

Adds the page for Traefik as requested on #1184

pages/common/traefik.md

@@ -0,0 +1,19 @@
+# traefik
+
+> Traefik HTTP reverse proxy and load balance.
+
+- Start server with default config:
+
+`traefik`
+
+- Start server with custom config file:
+
+`traefik --c {{config_file}}.toml`
+
+- Start server with a cluster mode enabled:
+
+`traefik --cluster
+
+- Start server with web ui enabled:
+
+`traefik --web`