Rexport tailwind.config.js from root

[raytiley]

Enables projects that provide editor support for tailwind to function. Keeping the actual config inside the app folder allows ember to rebuild on file changes.

However it seems that though ember rebuilds, it doesn't actually rebuild the css.

[bertdeblock]

@raytiley Have you looked at https://github.com/jeffjewiss/ember-cli-postcss#compile-caching?

[raytiley]

That looks like just what I need. Will update this over the weekend and merge it in. Thanks!

[bertdeblock]

@raytiley Also keep in mind that adding the tailwind config file to the app folder will actually ship it as well. Which I don't think is desired.