add screenshot to README

vor 10 Jahren · 50d0a0a788
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 barnard is a terminal-based client for the [Mumble](http://mumble.info) voice
 chat software.

 ![Screenshot](https://i.imgur.com/B8ldT5k.png)

 ## Requirements

 - [gumble](https://github.com/layeh/gumble/tree/master/gumble)