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

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

node_modules/underscore/cjs/_chainResult.js

@@ -0,0 +1,8 @@
+var underscore = require('./underscore.js');
+
+// Helper function to continue chaining intermediate results.
+function chainResult(instance, obj) {
+  return instance._chain ? underscore(obj).chain() : obj;
+}
+
+module.exports = chainResult;