Improve basic usage, add categories & create app, and make all windows linkable

Basic-usage.md

@@ -1,13 +1,26 @@
 # Basic usage
 
-- This is the **main window**:  
+## Main window
+This is the **main window**:  
 ![main window](https://github.com/Botspot/pi-apps/blob/master/icons/screenshots/main%20window.png?raw=true)  
 Use the main window to select an app category you want to view. Open a category folder by double-clicking on it.  
-- After selecting a category, you will see a list of apps:  
+## App list
+After selecting a category, you will see a list of apps:  
 ![app list](https://github.com/Botspot/pi-apps/blob/master/icons/screenshots/app%20list.png?raw=true)  
-- If you double-click an app, or select and app and click ![info.png](https://raw.githubusercontent.com/Botspot/pi-apps/master/icons/info.png), you will see the **Details window**.  
+## Details window
+If you double-click an app, or select and app and click ![info.png](https://raw.githubusercontent.com/Botspot/pi-apps/master/icons/info.png), you will see the **Details window**.  
 ![details](https://github.com/Botspot/pi-apps/blob/master/icons/screenshots/details%20window.png?raw=true)  
-- Pi-Apps may display a notification on boot. If you choose to view the updates, the **updater window** will appear:  
+## Updater window
+Pi-Apps may display a notification on boot. If you choose to view the updates, the **updater window** will appear:  
 ![updates](https://github.com/Botspot/pi-apps/blob/master/icons/screenshots/updates%20available.png?raw=true)  
-- Pi-Apps **Settings** can be configured by launching Menu -> Preferences -> Pi-Apps Settings.  
+## Settings
+Pi-Apps **Settings** can be configured by launching Menu -> Preferences -> Pi-Apps Settings.  
 ![settings](https://github.com/Botspot/pi-apps/blob/master/icons/screenshots/settings.png?raw=true)  
+## Category editor
+Clicking the "Categories..." button in Pi-Apps Settings will launch the **Category editor**. This allows you to change any category apps are located in.  
+![category editor](https://github.com/Botspot/pi-apps/blob/master/icons/screenshots/category%20editor.png?raw=true)  
+To hide an app from the app list, put it in the `hidden` category.  
+## Create App wizard
+Clicking the "New App..." button in Pi-Apps Settings will launch the **Create App wizard**.  
+![create app wizard](https://github.com/Botspot/pi-apps/blob/master/icons/screenshots/create%20app.png?raw=true)  
+This automated app maker saves time by formatting everything correctly and allowing simple code checking. However, it is entirely possible to manually edit/create an app by creating files directly in `~/pi-apps/apps`.