Do not recommend `sudo pip`

https://github.com/aws/aws-cli#installation

Line 42 of the README recommends using `sudo pip install awscli`.

This is likely to completely break your Python installation. It is considered bad practice to mix system Python packages with ones installed via pip. This should not be recommended. `--user` should be recommended first. If you want to mention the possibility of installing with `sudo pip` then it should also be mentioned that it *will* cause breakage.

If the intention is to make it easy to install globally then it would be better to use something like https://appimage.org/