title: Call to undefined method Illuminate\Support\Facades\Validator::resolver()
body: <h1><strong>What is it about ?</strong></h1>
  <p>I am using Laravel 5.2 and update the composer by running the following command</p>
  <pre><code>composer require felixkiss/uniquewith-validator:2.*
  </code></pre>
  <p>and then added the following to your providers array in config/app.php:</p>
  <pre><code>'providers' =&gt; array(
      // ...
  
      'Felixkiss\UniqueWithValidator\UniqueWithValidatorServiceProvider',
  ),
  </code></pre>
  <p>I did this because I am trying to implement Multiple column Unique Validation. I mean Composite Key Validation.</p>
  <h2><strong><a href="https://github.com/felixkiss/uniquewith-validator" rel="nofollow noreferrer">I am following the instructions as mentioned here</a></strong></h2>
  <h1><strong>What's the issue ?</strong></h1>
  <p>When Laravel runs the below line.</p>
  <pre><code>public function store(Request $request)
  {
      $v = \Validator::make($request-&gt;all(), [
          'SubCategory' =&gt; 'required|max:25|min:5|unique_with:tblsubcategory,CategoryID',
          'CategoryID' =&gt; 'required',
      ]);
  
      if ($v-&gt;fails()) {
          return \Redirect::back()
                      -&gt;withErrors($v)
                      -&gt;withInput();
      }
      return Redirect('/SubCategories-List/'.$request-&gt;input('CategoryID'));
  }
  </code></pre>
  <p>I get this error.</p>
  <blockquote>
  <p>FatalErrorException in UniqueWithValidatorServiceProvider.php line 27: Call to undefined method
  Illuminate\Support\Facades\Validator::resolver()</p>
  </blockquote>
  <h1><strong>Important</strong></h1>
  <p>This was working fine in Laravel 5.1</p>