Add node modules and compiled JavaScript from main (#172)

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

node_modules/underscore/modules/compact.js

@@ -0,0 +1,6 @@
+import filter from './filter.js';
+
+// Trim out all falsy values from an array.
+export default function compact(array) {
+  return filter(array, Boolean);
+}