Add challenge testing

getChallenges.js

@@ -0,0 +1,19 @@
+var fs = require('fs');
+var path = require('path');
+
+
+function getFilesFor(dir) {
+  return fs.readdirSync(path.join(__dirname, '/' + dir));
+}
+
+module.exports = function getChallenges() {
+  try {
+    return getFilesFor('challenges')
+      .map(function(file) {
+        return require('./challenges/' + file);
+      });
+  } catch (e) {
+    console.log('error', e);
+    return [];
+  }
+};