Wiki documentation update proposition

[patatoid]

First thanks for the repo which is a great tool to setup authentication in Elixir apps.

Just a proposition of documentation update concerning two sections :

• dependencies that are outdated in documentation
• brings more precision about steps in order to configure Phauxth

As it is not possible yet to propose pull requests for wiki pages, I created a gist here

Cheers :)

[riverrun]

Thanks for your help. I will get back to you later this week.