Import docs into main repository (#2874)

* import docs into main repository

Signed-off-by: Matti Ranta <matti@mdranta.net>

docs/content/doc/installation/windows-service.en-us.md

@@ -0,0 +1,34 @@
+---
+date: "2016-12-21T15:00:00-02:00"
+title: "Register as a Windows Service"
+slug: "windows-service"
+weight: 10
+toc: true
+draft: false
+menu:
+  sidebar:
+    parent: "installation"
+    name: "Windows Service"
+    weight: 30
+    identifier: "windows-service"
+---
+
+# Register as a Windows Service
+
+To register Gitea as a Windows service, first run `cmd` as an Administrator, and then run the following command:
+
+```
+sc create gitea start= auto binPath= ""C:\gitea\gitea.exe" web --config "C:\gitea\custom\conf\app.ini""
+```
+
+Do not forget to replace `C:\gitea` with your real Gitea folder.
+
+After, open "Windows Services", search for the service named "gitea", right-click it and click on "Run". If everything is OK you should be able to reach Gitea on `http://localhost:3000` (or the port is was configured, if different than 3000).
+
+## Unregister as a service
+
+To unregister Gitea as a service, open `cmd` as an Administrator and run:
+
+```
+sc delete gitea
+```