Explanation of suggested add-ons (#2179)

* Explanation of suggested add-ons

Added an explanation of the new suggested add-ons feature.

Note: I added a new screen-shot image, but I am not sure if it is automatically added to the PR commit.

Signed-off-by: Andrew Fiddian-Green <software@whitebear.ch>

Signed-off-by: Andrew Fiddian-Green <software@whitebear.ch>

* Adopt reviewer suggestion.

Signed-off-by: Andrew Fiddian-Green <software@whitebear.ch>

* Fix umage location

Signed-off-by: Andrew Fiddian-Green <software@whitebear.ch>

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Signed-off-by: Andrew Fiddian-Green <software@whitebear.ch>

configuration/addons.md

@@ -6,14 +6,21 @@ layout: documentation
 
 Add-ons can be installed in different ways, described below.
 
-## Through UI
+## Through User Interface
 
 Log into your admin account (if not already done).
-Navigate to `Settings` and have a look for the add-ons section.
-Search for the desired add-on in the categories and press install.
+Navigate to **Settings** and have a look for the add-ons section.
+Search for the desired add-on in the categories and press 'install'.
 
 ![installing Add-ons through UI](./images/InstallAddonsThroughUi.gif)
 
+Alternatively navigate to **Add-on Store**.
+The openHAB framework will already have scanned your PC and LAN to discover home automation equipment in your system.
+Based on the discovery results it will show the add-ons that it recommends to install.
+Choose the desired add-on and press 'install'.
+
+![image](./images/suggestions.png)
+
 ## Through Configuration Files
 
 For this installation option you need to know the `id` of the desired add-on, e.g., network or mqtt.