Add Styles To Tailwind 2

NOTE: In order to get this to work, I had to:

Code
rm package-lock.json
rm -rf node_modules
npm install

Tailwind removes most default styles via it's `preflight`. Global/base styles can be added back in in the `syltes/global.css` file in Gatsby after walking through the Tailwind install.

An example:

Code
-- css