add screenshot to README

před 10 roky · 50d0a0a788
--- a/README.md
+++ b/README.md
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 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)