title: load-grunt-config not found task to launch
body: <p>I'm using load-grunt-config plugin to split my gruntfile. Here is my Grunfile.js :</p>
  
  <pre><code>'use strict';
  
  module.exports = function (grunt) {
  
     var path = require('path');
  
     // Time how long tasks take. Can help when optimizing build times
     require('time-grunt')(grunt);
  
     var options = {
        configPath: path.join(process.cwd(), 'Grunt')
     };
  
     require('load-grunt-config')(grunt, options);
  
     grunt.registerTask('checkCode', ['tslint']);
  };
  </code></pre>
  
  <p>I got a folder named 'Grunt' and a file named tslint.js.</p>
  
  <p>Everytime i use : <code>grunt checkCode</code> in my CLI i got the following error :</p>
  
  <pre><code>Loading "Gruntfile.js" tasks...ERROR
  ReferenceError: grunt is not defined
  Warning: Task "checkCode" not found. Use --force to continue.
  </code></pre>
  
  <p>I also try aliases file but this not work too.</p>
  
  <p>Thanks for your help.</p>