refactor: add new build output

This will replace the webpack implementation. I will continue monitoring this build.

Related to problem #83

Author: jofftiquez

rollup.config.js

@@ -1,8 +1,15 @@
 module.exports = {
   input: 'src/index.js',
-  output: {
-    file: 'build/vue-html-to-paper.js',
-    name: 'VueHtmlToPaper',
-    format: 'umd',
-  },
+  output: [
+    {
+      file: 'build/vue-html-to-paper.js',
+      name: 'VueHtmlToPaper',
+      format: 'umd',
+    },
+    {
+      file: 'dist/index.js',
+      format: 'cjs',
+      exports: 'named',
+    },
+  ],
 };