Re-add Lawnchair (#492)

Author: offa

README.md

@@ -448,6 +448,7 @@ A list of **Free** and **Open Source Software** ***(FOSS)*** for **Android** –
 * [**KISS**](http://kisslauncher.com/) <sup>**[[F-Droid](https://f-droid.org/app/fr.neamar.kiss)]**</sup>
 * [**Kvaesitso**](https://kvaesitso.mm20.de/) <sup>**[[F-Droid](https://f-droid.org/app/de.mm20.launcher2.release)]**</sup>
 * [**LaunchTime**](https://github.com/quaap/LaunchTime) <sup>**[[F-Droid](https://f-droid.org/app/com.quaap.launchtime)]**</sup>
+* [**Lawnchair**](https://github.com/LawnchairLauncher/lawnchair) <sup>**[[IzzyOnDroid](https://apt.izzysoft.de/fdroid/index/apk/app.lawnchair)]**</sup>
 * [**Lunar Launcher**](https://github.com/iamrasel/lunar-launcher) <sup>**[[F-Droid](https://f-droid.org/app/rasel.lunar.launcher)]**</sup>
 * [**Neo-Launcher**](https://github.com/NeoApplications/Neo-Launcher) <sup>**[[IzzyOnDroid](https://apt.izzysoft.de/fdroid/index/apk/com.saggitt.omega)]**</sup>
 * [**Olauncher**](https://github.com/tanujnotes/Olauncher) <sup>**[[F-Droid](https://f-droid.org/app/app.olauncher)]**</sup>