README: Add instructions to uninstall

README.md

@@ -48,6 +48,13 @@ variable if not already. This can be done with `pipx ensurepath`.
 
 You should now be able to run `cl2nc` and see the manual page with `man cl2nc`.
 
+To uninstall:
+
+```sh
+pipx uninstall cl2nc
+rm ~/.local/share/man/man1/cl2nc.1
+```
+
 ### macOS
 
 Open the Terminal. Install cl2nc with:
@@ -62,12 +69,18 @@ user name and `<version>` is the Python version. This path should be printed
 by the above command. This can be done by adding this line to the file
 `.zprofile` in your home directory and restart the Terminal:
 
-```
+```sh
 PATH="$PATH:/Users/<user>/Library/Python/<version>/bin"
 ```
 
 You should now be able to run `cl2nc` and see the manual page with `man cl2nc`.
 
+To uninstall:
+
+```sh
+python3 -m pip uninstall cl2nc
+```
+
 ### Windows
 
 Install [Python 3](https://www.python.org). In the installer, tick `Add
@@ -81,6 +94,12 @@ pip install cl2nc
 
 You should now be able to run `cl2nc`.
 
+To uninstall:
+
+```sh
+pip uninstall cl2nc
+```
+
 ## Usage
 
 cl2nc is a command line program to be run a terminal (Linux and macOS) or the