Add WebdriverIO docs page as showcase

[christian-bromann]

Motivation

The WebdriverIO project recently moved to Docusaurus v2 and the team is very happy with the results of it. Thank you for building such a great tool to build static websites for open source projects 👍

Have you read the Contributing Guidelines on pull requests?

Yes

Test Plan

n/a

Related PRs

n/a

[netlify]

[V1] Deploy preview failure

Built without sensitive environment variables with commit b42b8e8

https://app.netlify.com/sites/docusaurus-1/deploys/60267c9042a2b000073abc09

[netlify]

[V1] Deploy preview failure

Built without sensitive environment variables with commit dda4341

https://app.netlify.com/sites/docusaurus-1/deploys/60267cce208fd600080c6f48

[netlify]

Deploy preview for docusaurus-2 ready!

Built without sensitive environment variables with commit b42b8e8

https://deploy-preview-4220--docusaurus-2.netlify.app

[github-actions]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟠 Performance	72
🟢 Accessibility	96
🟢 Best practices	100
🟢 SEO	100
🟢 PWA	95

Lighthouse ran on https://deploy-preview-4220--docusaurus-2.netlify.app/classic/

[github-actions]

Size Change: +14 B (0%)

Total Size: 156 kB

ℹ️ View Unchanged

Filename	Size	Change
website/build/assets/css/styles.********.css	17.6 kB	0 B
website/build/assets/js/main.********.js	109 kB	+14 B (0%)
website/build/blog/2017/12/14/introducing-docusaurus/index.html	21.7 kB	0 B
website/build/docs/introduction/index.html	180 B	0 B
website/build/index.html	6.95 kB	0 B

_{compressed-size-action}

[netlify]

Deploy preview for docusaurus-2 ready!

Built without sensitive environment variables with commit dda4341

https://deploy-preview-4220--docusaurus-2.netlify.app

[slorber]

Thanks, we appreciate the feedback 👍

Nice customized site :)