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

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

node_modules/underscore/cjs/allKeys.js

@@ -0,0 +1,15 @@
+var isObject = require('./isObject.js');
+var _setup = require('./_setup.js');
+var _collectNonEnumProps = require('./_collectNonEnumProps.js');
+
+// Retrieve all the enumerable property names of an object.
+function allKeys(obj) {
+  if (!isObject(obj)) return [];
+  var keys = [];
+  for (var key in obj) keys.push(key);
+  // Ahem, IE < 9.
+  if (_setup.hasEnumBug) _collectNonEnumProps(obj, keys);
+  return keys;
+}
+
+module.exports = allKeys;