Update README.md

Adding the missing (non-obvious) stage to rename the repo before use by documenting the way to clone the repo/at checkout

README.md

@@ -5,6 +5,25 @@ NextBestNetwork is a skin for **[MediaWiki](http://mediawiki.org/)** (1.35+) bas
 
 You can find an instance of NextBestNetwork in action at **[wiki.specnext.dev](http://wiki.specnext.dev/)**
 
+## To Use
+
+   ```
+   cd skins
+   ```
+
+2. Clone the repository:
+
+   ```
+   git clone https://git.specnext.dev/NextBestNetwork/mediawiki-theme NextBestNetwork
+   ```
+
+3. Add the following to `LocalSettings.php`:
+
+   ```php
+   wfLoadSkin( 'NextBestNetwork' );
+   $wgDefaultSkin = "nextbestnetwork";
+   ```
+
 The original project's README now follows...
 
 # Tweeki, a Bootstrap based skin for MediaWiki