Created Installation (markdown)

Installation.md

@@ -0,0 +1,35 @@
+<p align="center"><img src="https://github.com/WesterosCraftCode/ElectronLauncher/blob/master/app/assets/images/WesterosSealCircle.png?raw=true" width="150px" height="150px" alt="westeroscraft"></p>
+
+<h1 align="center">WesterosCraft Launcher Wiki</h1>
+
+## Downloads
+
+Download the Launcher from one of the following locations.
+
+* [WesterosCraft.com/launcher](https://westeroscraft.com/launcher)
+* [GitHub Releases (WesterosCraftCode/ElectronLauncher)](https://github.com/WesterosCraftCode/ElectronLauncher/releases)
+
+*These are the **only secure download links** for the launcher. Do not download the launcher from any other site.*
+
+## Installation
+
+Installation is fairly straightforward. If you need assistance, you can follow the brief instructions below.
+
+### Windows
+
+* Download and run the Windows version of the launcher (`.exe`).
+* Windows SmartScreen will open.
+  * ![SmartScreen](https://i.imgur.com/dxnP677.png)
+  * Click **More info** and then **Run Anyway**.
+* Follow the on-screen instructions to complete installation.
+
+### MacOS
+
+* Download and run the macOS version of the launcher (`.dmg`).
+* **Control-click** the app icon, then choose **Open** from the shortcut menu.
+* Follow the on-screen instructions to complete installation.
+
+### Linux
+
+* Download and run the Linux version of the launcher (`.AppImage`).
+* Follow the on-screen instructions to complete installation.