Switch CI from travis to GH actions

[zbraniecki]

Travis is falling apart, we need to switch to GH actions.

[jim4067]

I would like to help out with this. I made a simple github workflow that runs clippy and tests on PR #49

[zbraniecki]

That works great, thank you!

Can you also add cargo fmt and remove Travis?

[zbraniecki]

aaand update badge? :)

[jim4067]

Okay. i'll get down to it 👍🏾

[jim4067]

About removing travis-ci, what about, code coverage by coveralls and adding a PR actions workflow?

[zbraniecki]

About removing travis-ci, what about, code coverage by coveralls and adding a PR actions workflow?

yup!