Update README

Author: ezand

README.md

@@ -10,8 +10,31 @@ A Lovelace card to display Norwegian Posten delivery days.
 
 ## Prerequisites
 
-This card assumes you have a sensor that provides the next delivery days, see [this gists](https://gist.github.com/ezand/592aefd2ee880eb5723e041d413d7be0)
-as an example. Remember to replace the `postCode` parameter with your
+This card assumes you have a sensor that provides the next delivery days,
+see [this example](https://github.com/ezand/home-assistant-config/blob/master/sensors/posten-delivery-days.yaml).
+Remember to replace the `postCode` parameter with your own.
+
+## Installation
+
+### [HACS](https://hacs.xyz/) (Home Assistant Community Store)
+
+1. Go to HACS page on your Home Assistant instance
+1. Select `Frontend`
+1. Press add icon and search for `posten`
+1. Select Posten Card repo and install
+1. Force refresh the Home Assistant page (<kbd>Ctrl</kbd> + <kbd>F5</kbd>)
+1. Add posten-card to your page
+
+### Manual
+
+1. Download the 'posten-card.js' from the latest [release](https://github.com/ezand/lovelace-posten-card/releases) (with right click, save link as)
+1. Place the downloaded file on your Home Assistant machine in the `config/www` folder (when there is no `www` folder in the folder where your `configuration.yaml` file is, create it and place the file there)
+1. In Home Assistant go to `Configuration->Lovelace Dashboards->Resources` (When there is no `resources` tag on the `Lovelace Dashboard` page, enable advanced mode in your account settings, rand retry this step)
+1. Add a new resource
+   1. Url = `/local/posten-card.js`
+   1. Resource type = `module`
+1. Force refresh the Home Assistant page (<kbd>Ctrl</kbd> + <kbd>F5</kbd>)
+1. Add posten-card to your page
 
 ## Options