title: Object has no method push
body: <p>I'm querying some objects and I'm trying to put them in an array:</p>
  
  <pre><code> var Post = Parse.Object.extend('Post')
    var query = new Parse.Query(Post)
    query.find({
      success: function (results) {
        console.log('Successfully retrieved ' + results.length + ' scores.')
        var arr = []
        results.forEach(function (result) {
          arr = arr.push(result.get('title'))
        })
        console.log(arr)
      },
      error: function (error) {
        alert('Error: ' + error.code + ' ' + error.message)
      }
    })
  </code></pre>
  
  <p>as you can see <code>arr</code> is an array, but I don't know why I get this error:</p>
  
  <pre><code>Uncaught TypeError: Object 1 has no method 'push'
  </code></pre>
  
  <p>Not sure what I'm doing wrong since <code>result.get('title')</code> get the correct String titles.</p>