Readme: explain gsettings

Signed-off-by: Vasiliy Doylov <nekocwd@mainlining.org>

README.md

@@ -3,7 +3,6 @@
 Yep, it's written in Vala
 
 ## Galery
-
 <table>
   <tr>
     <td align="center">
@@ -38,15 +37,17 @@ Yep, it's written in Vala
 ## Installing from my nightly repo
 1) [Add my nightly repo](https://git.nekocwd.duckdns.org/Administration/Documentation/src/branch/master/install-nightly-repo.md)
 2) Install plugin
-  ```
+  ```sh
   sudo apk add phosh-plugin-mediaplayer@nightly
   ```
 3) Enable plugin for quick settings and/or for lockscreen
 
 ## Enabling plugin
-
-You can enable it via gsettings `sm.puri.phosh.plugins` -> `lock-screen` or `quick-settings`
-
+You can enable it via gsettings
+```sh
+gsettings set sm.puri.phosh.plugins quick-settings "['media-player']"
+gsettings set sm.puri.phosh.plugins lock-screen "['media-player']"
+```
 Or you can use `phosh-mobile-settings` app
 
 ## Building