Add addon installation instructions

README.md

@@ -29,6 +29,46 @@ This is a [Trilium Notes](https://github.com/zadam/trilium) theme to go with Eve
 * Under "Theme", choose EverForest Ant Dark
 * Enjoy!
 
+### Enabling Addon Features
+#### Zen Mode
+* Create a 'JS frontend' code note
+* Add the `#widget` attribute to 'Owned Attributes' (the button with three lines and a checkmark)
+* Add the following code (created by [Nriver](https://github.com/Nriver/awesome-trilium/issues/44))) to the note
+    ```js
+    api.addButtonToToolbar({
+        title: 'Zen mode',
+        icon: 'spa',
+        action: function() {
+            $("body").toggleClass("zen-mode");
+        },
+        shortcut: 'alt+z'
+    });
+    ```
+* Reload (`ctrl+r` or `F5`) Trilium to enable the script
+
+##### Usage
+Press `alt+z` or the zen (spa) button in the launcher (left most panel) to enable/disable zen mode.
+
+There are two types of zen mode available:
+1. Right panel enabled
+2. Right panel disabled
+
+Right panel is enabled by default. If you would like to disable it, you can either add the following code in a new CSS note or uncomment it in the Stellar Dark theme as seen in the video below.
+
+![Zen Mode](/screenshots/EFAD_Zen.mp4)
+
+##### Added Features
+* Window control buttons are still accessible in zen mode
+* Zen button is still accessible in zen mode for easy disabling in case you don't remember the shortcut
+* Bottom panel widgets are not visible in zen mode
+* Optional disabling of right panel in zen mode
+
+#### Show Position in TOC and Syntax Highlight
+Please go to each addon's respective page for instructions on how to enable these addons.
+* [Show Position in TOC](https://github.com/SiriusXT/trilium-show-position-in-toc)
+* [Syntax Highlight](https://github.com/antoniotejada/Trilium-SyntaxHighlightWidget)
+
+
 ## Credits and Resources
 ### Fonts
 * Jost: https://indestructibletype.com/Jost.html