Changed back to prebuilt but this time it will build on install to allow theme.styl

Signed-off-by: Florian BOUILLON <florian.bouillon@delta-wings.net>

rollup.config.js

@@ -0,0 +1,27 @@
+import typescript from 'rollup-plugin-typescript2';
+import styles from 'rollup-plugin-styles'
+import pkg from './package.json';
+
+export default [
+	{
+		input: 'src/index.ts',
+		external: ['ms'],
+		plugins: [
+			styles({
+				modules: true,
+				url: false,
+				autoModules: true,
+				mode: 'extract',
+
+			}),
+			typescript({useTsconfigDeclarationDir: true}), // so Rollup can convert TypeScript to JavaScript
+		],
+		output: [
+			{
+				file: pkg.main,
+				format: 'es',
+				assetFileNames: 'style.css'
+			}
+		]
+	}
+];