Restore missing LICENSE and how_to_schedule.md

LICENSE

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+MIT License
+
+Copyright (c) 2023 007revad
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

how_to_schedule.md

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+# How to schedule a script in Synology Task Scheduler
+
+To schedule a script to run on your Synology at boot-up or shut-down follow these steps:
+
+**Note:** You can setup a schedule task and leave it disabled, so it only runs when you select the task in the Task Scheduler and click on the Run button.
+
+1. Go to **Control Panel** > **Task Scheduler** > click **Create** > and select **Triggered Task**.
+2. Select **User-defined script**.
+3. Enter a task name.
+4. Select **root** as the user (The script needs to run as root).
+5. Select **Boot-up** as the event that triggers the task.
+6. Leave **Enable** ticked.
+7. Click **Task Settings**.
+8. Optionally you can tick **Send run details by email** and **Send run details only when the script terminates abnormally** then enter your email address.
+9. In the box under **User-defined script** type the path to the script. 
+    - e.g. If you saved the script to a shared folder on volume1 called "scripts" you'd type:
+    - **/volume1/scripts/syno_hdd_db.sh -nr --autoupdate=3**
+    - For information on the options see [Options](README.md#options)
+11. Click **OK** to save the settings.
+
+Here's some screenshots showing what needs to be set:
+
+<p align="leftr"><img src="images/schedule1.png"></p>
+
+<p align="leftr"><img src="images/schedule2.png"></p>
+
+<p align="leftr"><img src="images/schedule3-2.png"></p>