Website (#2241)

* initial docusaurus set-up

* Delete why-prettier.md

* Update README.md

* Update Docusaurus structure

* Update package.json

* Update siteConfig.js

* Remove ~ files

* chore(website): update build script

* Add redirect script

* Get eslint working on website

* Fix to allow for baseUrl of '/'

* Update docusaurus version

* Update README.md

* Change redirect script to use baseUrl of '/'

* Fix index.js formatting

* Load redirect script

* General cleanup

* Add projects using prettier
* Update service worker to just scope to playground
* Reduce link repeatition
* Link "Try it out" button to /playground/
* Make header of playground approximately same as main site
* Remove .html from URLs (e.g. users.html -> users/)
* Link Gitter Chat

* Add circleci.yml

* Only run builds on master

* Do deployment using Travis

.gitignore

@@ -6,3 +6,5 @@ npm-debug.log
 /test.css
 /.vscode
 /dist
+/website/node_modules
+.DS_Store