FR: docs with some example usage

[jeanmonet]

Hi, would it be possible to add a few example in the documentation (or readme) for using this package (including import statement, etc)?

[jabowery]

The absence of an import statement in the README is a major flaw.

[woctezuma]

Looking at my old code, this works as follows:

import Levenshtein as lv

Then you call lv.distance() exactly as with this other package: https://maxbachmann.github.io/Levenshtein/levenshtein.html