Outdated Repository link on README.md

[awareness481]

It seems that you changed your github username but forgot to update the README.md file. Specifically, I'm referring to the following line of code which contains a broken link:

![Evie Landing](https://github.com/anges244/evie/blob/master/docs/images/preview_landing.png)

This can be an issue, as people who download Evie from undraw.co might not be able to find this github repo if they want to.

You might already be aware of this issue, but I thought I'd just let you know just in case.

Keep being awesome!