Add node modules and compiled JavaScript from main (#54)

Co-authored-by: Oliver King <oking3@uncc.edu>

node_modules/underscore/modules/_chainResult.js

@@ -0,0 +1,6 @@
+import _ from './underscore.js';
+
+// Helper function to continue chaining intermediate results.
+export default function chainResult(instance, obj) {
+  return instance._chain ? _(obj).chain() : obj;
+}