added pager screenshot

Author: willmcgugan

README.md

@@ -102,6 +102,8 @@ Add `--pager` to display the content with a built in pager application.
 
 Scroll the pager with cursor keys, page up/down, home, end. Alternatively use the scrollbar which will be visible to the right of the terminal.
 
+![pager](https://raw.githubusercontent.com/Textualize/rich-cli/main/imgs/pager1.png)
+
 ## Network
 
 The `rich` command can read files from the internet you give it a URL starting with `http://` or `https://`.