Added Windows Task Scheduler solution.

This solution does not require 3rd Party tools.

users/autostart.rst

@@ -10,6 +10,32 @@ Windows
 There is currently no official installer available for Windows. However,
 there are a number of easy solutions.
 
+Task Scheduler
+~~~~~~~~~~~~~~
+
+#. Start the `Task Scheduler <https://en.wikipedia.org/wiki/Windows_Task_Scheduler>`__
+#. Create a New Task ([Action] menu -> [Create Task...])
+#. General Tab:
+    #. Name the task (for example 'SyncThing')
+    #. Check "Run whether user is logged on or not:
+#. Triggers Tab:
+    #. Click [New...]
+    #. Set [Begin the task] to [At Startup]
+    #. (optional) choose a delay
+    #. Make sure Enabled is checked
+    #. Click [OK]
+#. Actions Tab:
+    #. Click [New...]
+    #. [Action] should be set as [Start a program]
+    #. Enter the path to syncthing.exe in [Program/Script]
+    #. Click [OK]
+#. Settings Tab:
+    #. (recommended) Kepp the checkbox on [Allow task to be run on demand]
+    #. Clear checkbox from [Stop task if it runs longer than:]
+    #. (recommended) Keep [Do not start a new instance] for [If the task is already running, then the following rule applies]
+#. Click OK
+#. Enter password for the user.
+
 Third-party Tools
 ~~~~~~~~~~~~~~~~~