Add deps badge to README

[rrrene]

Hi Isaac,

we don't know each other, but I'd like to pitch you a new Elixir related badge:

It shows you an analysis for your dependencies. Behind the badge works a CI service written in Elixir which can notify you whenever important updates for your Hex packages are released.

This is still in its infancy, and I want to basically invite you to join the beta to test-drive this. I really believe that we can create a great service for the community with this. That said, don't feel any obligation to accept the PR. You can't hurt my feelings by voicing your honest opinion about this idea!

[whitfin]

@rrrene actually I filed an issue on Credo the other day ;)

I'll accept this sure - what exactly should the badge look like when everything is perfect? A solid green bar?

Thanks

[rrrene]

Ehm, that's why I never lament the short attention span of others 😅

In case of your badge, everything is fine. The different greens are for the Mix envs:

• Dark green: prod deps
• Light green: other deps (dev, test, et al.)

There is a help page for it, but re-reading it now I realize it could be improved as well: https://beta.hexfaktor.org/help/badge

I created an issue to remember doing that! 👍

[whitfin]

@rrrene neat. I merged it in :) thank you :)