Merge branch 'patch-1' into 'master'

Added hint for the companion app chat

See merge request card10/logix!15

app/developing.md

@@ -2,16 +2,22 @@
 title: Developing
 ---
 
-Here is the source:
-- [git.card10.badge.events.ccc.de/card10/companion-app-android](https://git.card10.badge.events.ccc.de/card10/companion-app-android/)
-- [git.card10.badge.events.ccc.de/card10/companion-app-ios](https://git.card10.badge.events.ccc.de/card10/companion-app-ios/)
+You can find the repositories for the apps here:
 
+* [git.card10.badge.events.ccc.de/card10/companion-app-android](https://git.card10.badge.events.ccc.de/card10/companion-app-android/)
+* [git.card10.badge.events.ccc.de/card10/companion-app-ios](https://git.card10.badge.events.ccc.de/card10/companion-app-ios/)
+
+Please join the channel [#card10companion:asra.gr](https://riot.im/app/#/room/#freenode_#card10companion:matrix.org)
 
 ### Android / F-Droid nightly
+
 The GitLab delivere a (unsafe) Android Debug Build of Companion App by a F-Droid repository.
 If you are able to create debug logs and create Issues feel free to subscribe this repository.
 
 
 [![https://git.card10.badge.events.ccc.de/card10/companion-app-android-nightly/raw/master/fdroid/repo](https://git.card10.badge.events.ccc.de/card10/companion-app-android-nightly/raw/master/icon.png)](https://git.card10.badge.events.ccc.de/card10/companion-app-android-nightly/raw/master/fdroid/repo)
 
+### iOS Testflight builds
+
+* not yet available. Meanwhile, please use [Xcode](https://developer.apple.com/xcode/) to install the app on your iOS device.