Move bench-folder in tests-folder

First part of reorganizing and cleaning up test-folders.

tests/bench/templates/index.js

@@ -0,0 +1,9 @@
+var fs = require('fs');
+
+var templates = fs.readdirSync(__dirname);
+templates.forEach(function(template) {
+  if (template === 'index.js' || !/(.*)\.js$/.test(template)) {
+    return;
+  }
+  module.exports[RegExp.$1] = require('./' + RegExp.$1);
+});