title: Possible to add multiple parameters to excel import?
body: <p>I have a basic form that contains an excel file upload and a select option.</p>
  
  <p>The select contains a few options. I want to pass the selected option from the user with the file to my <code>Excel::import</code></p>
  
  <p>I tried passing another parameter to my import but it returns error. (has to be string, array given)</p>
  
  <p><strong>Is this possible using Laravel excel import?</strong> </p>
  
  <p><strong>Controller</strong></p>
  
  <pre><code>public function create(Request $request)
  {
      if($request-&gt;hasFile('file')) 
      {
          $package = $request-&gt;input('package');
          // how can I add $package to my import to insert it to my user model?
          Excel::import(new AccountsImport, $request-&gt;file('file'));
  
          return ['message' =&gt; 'Excel has been succesfully uploaded'];
      }
  }
  </code></pre>
  
  <p><strong>AccountsImport</strong></p>
  
  <pre><code>class AccountsImport implements ToCollection, withHeadingRow
  {
  
      public function collection(Collection $rows)
      {
          $rows-&gt;each(function($row, $key) {
              Account::create([
                  'name'   =&gt; $row['student'],
                  'email'  =&gt; $row['e_mail'],
                  // Want it to be possible to add my package here
                  //'package' =&gt; $package
              ]);
          });
      }
  }
  </code></pre>