readme: Add installation instructions

README.md

@@ -6,9 +6,13 @@ Add-on for Anki that adds quick typing tests to any card. Shows an additional di
 
 - [Anki](https://apps.ankiweb.net/) installed
 
+## Installation
+
+- **If installing via package download:** Put the source folder into your `Anki2/addons21/` folder.
+- **If installing via AnkiWeb:** `Tools > Add-ons > Get Add-ons...` and enter the code `1818995561`
+
 ## Configuration
 
-- Put the source folder into your `Anki2/addons21/` folder.
 - `Tools > Add-ons > anki-taipingu`, select `Config` and add the field name of your card that contains the relevant text you wish to test into the `trigger_fields` array.
 - To find the field name of a particular card type, go to `Browse > Note Types > [Card Name]` and check which field contains the relevant text.