Fix new required import order

Author: yannickcr

tests/index.js

@@ -2,12 +2,12 @@
 
 'use strict';
 
-const plugin = require('..');
-
 const assert = require('assert');
 const fs = require('fs');
 const path = require('path');
 
+const plugin = require('..');
+
 const ruleFiles = fs.readdirSync(path.resolve(__dirname, '../lib/rules/'))
   .map(f => path.basename(f, '.js'));