Merge pull request #80 from GalaxySnail/update-readme

Update tox envs in README

Author: jquast

docs/intro.rst

@@ -107,7 +107,7 @@ Install wcwidth in editable mode::
 
 Execute unit tests using tox_::
 
-   tox -e py36,py37,py38,py39,py310,py311,py312
+   tox -e py27,py35,py36,py37,py38,py39,py310,py311,py312
 
 Updating Unicode Version
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