Adding dark mode starter

Full tutorial available here

Name		Name	Last commit message	Last commit date
Latest commit History 7 Commits
src		src
static/fonts		static/fonts
.gitattributes		.gitattributes
.gitignore		.gitignore
README.md		README.md
gatsby-browser.js		gatsby-browser.js
gatsby-node.js		gatsby-node.js
package-lock.json		package-lock.json
package.json		package.json

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