[Ready for Review] Update BinderHub workshop

[sgibson91]

Summary

This PR is a reconstruction of #762

Addresses #694

This PR is implementing improvements to the Zero to BinderHub workshop recommended through feedback from RSE Con UK 2019.

List of changes proposed in this PR (pull-request)

• See check list in issue Reflections on Build A BinderHub workshop #694 for changes to the actual workshop.
• Helm section has been made Helm3 compatible
• A hackmd template has been added for collecting feedback/distributing links during the workshop

What should a reviewer concentrate their feedback on?

• Everything looks ok?

Acknowledging contributors

• All contributors to this pull request are already named in the table of contributors in the README file.
• The following people should be added to the table of contributors in the README file:

[netlify]

Deploy preview for the-turing-way ready!

Built with commit 72a4b32

https://deploy-preview-1552--the-turing-way.netlify.app

[malvikasharan]

Not sure who should look at this one. Gonna tag @betatim if he can suggest someone who can review this.

[sgibson91]

@consideRatio might be able to help?

[sgibson91]

Thanks @Lovkush-A, I've addressed all your points! 🙌🏻

[sgibson91]

If this PR is not getting reviewed/approved because folk feel like they don't know enough about kubernetes and/or helm, all that really needs to be reviewed is whether the instructions in zero-to-binderhub.md follow along with/make sense compared to the Azure instructions in the Zero to JupyterHub docs, as this is basically just an Azure-specific, one-pager copy of those docs.

[Lovkush-A]

@sgibson91 I tried having a look and comparing with the resources on jupyterhub and binderhub. It looks like they match up.

[sgibson91]

Hey @Lovkush-A, I think I have addressed all your comments. If you're happy, can you approve this Pull Request following the steps here please? (But select "Approve", not "Request Changes" like in the screenshot!) Then the PR will be mergeable. Thank you! 👾

[Lovkush-A]

@sgibson91 All changes look good!

Also worth saying that tutorial looks in top shape; very clear and concise. Despite me having no idea about most of the content, I was able to follow along in the tutorial and make sense of the instructions!

[sgibson91]

Thank you @Lovkush-A, glad to know it's a useful resource!