Add node modules and new code for release (#57)

Co-authored-by: taakleton <taakleton@users.noreply.github.com>

node_modules/abab/index.js

@@ -0,0 +1,9 @@
+"use strict";
+
+const atob = require("./lib/atob");
+const btoa = require("./lib/btoa");
+
+module.exports = {
+  atob,
+  btoa
+};