Metronome added (fixes #90).

README.md

@@ -29,6 +29,7 @@ Table of Contents
    * [Maps & Navigation](#-maps--navigation)
    * [Media Frontends](#-media-frontends)
    * [Messaging](#-messaging)
+   * [Music](#-music)
    * [Music Player](#-music-player)
    * [Notes & Todo Lists](#-notes--todo-lists)
    * [Security](#-security)
@@ -194,6 +195,10 @@ Table of Contents
 - [**Pix-Art Messenger**](https://github.com/kriztan/Pix-Art-Messenger) <sup>**[[F-Droid](https://f-droid.org/app/de.pixart.messenger)]**</sup>
 
 
+### • Music
+- [**Metronome**](https://github.com/thetwom/toc2) <sup>**[[F-Droid](https://f-droid.org/app/de.moekadu.metronome)]**</sup>
+
+
 ### • Music & Audio Player
 - [**Odyssey**](https://github.com/gateship-one/odyssey) <sup>**[[F-Droid](https://f-droid.org/app/org.gateshipone.odyssey)]**</sup>
 - [**Vanilla Music**](http://vanillamusic.io/) <sup>**[[F-Droid](https://f-droid.org/app/ch.blinkenlights.android.vanilla)]**</sup>