Add "xclip" section

README.md

@@ -114,6 +114,16 @@ tail -f /var/log/pacman.log | bat --paging=never -l log
 Note that we have to switch off paging in order for this to work. We have also specified the syntax
 explicitly (`-l log`), as it can not be auto-detected in this case.
 
+#### `xclip`
+
+The line numbers and Git modification markers in the output of `bat` can make it hard to copy
+the contents of a file. To prevent this, you can call `bat` with the `-p`/`--plain` option or
+simply pipe the output into `xclip`:
+```
+bat main.cpp | xclip
+```
+`bat` will detect that the output is being redirected and print the plain file contents.
+
 ## Installation
 
 ### On Ubuntu