title: Set default value inside ngSelect
body: <p>I have a a ngSelect with some options in it.</p>
  
  <pre><code>&lt;select data-ng-model="type" data-ng-change="option(type)"&gt;
     &lt;option data-ng-repeat="type in languages" value="{{type.i18n}}"&gt;
          {{type.language}}
      &lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>And a Controller </p>
  
  <pre><code>angular.module('navigation', [])
  .controller('NavCtrl',['$scope','$translate', function($scope,$translate){
  
      $scope.option = function(type){
          console.log(type) //this display the i18n value of languages
          $translate.use(type);
      }
  
      $scope.languages = [
          { language: "English", i18n: "en_EN"},
          { language: "Swedish", i18n : "se_SE" }
      ];
  }])
  </code></pre>
  
  <p>I want the ngSelect to have a default option, in my case: "English". I've tried to set it to: </p>
  
  <pre><code>$scope.type = $scope.languages[0].language; // English
  $scope.type = $scope.languages[0]; //The whole darn json object.
  </code></pre>
  
  <p>Help please?</p>