Add linting, formatting and pre-commit (#53)

* Add dev-dependancies

* Security update npm packages

* Force audit fix

* Add linting, formatting and precommit

* Format files

postcss.config.js

@@ -1,6 +1,3 @@
 module.exports = {
-    plugins: [
-        require('tailwindcss'),
-        require('autoprefixer')
-    ]
-}
+  plugins: [require('tailwindcss'), require('autoprefixer')],
+};