title: ionic select with angularjs
body: <p>I am new to ionic + angularJS... I have created a select item drop down like this</p>
  
  <pre><code>&lt;div class="list"&gt;
      &lt;div class="item item-input item-select"&gt;
        &lt;div class="input-label" &gt;
         Unit
       &lt;/div&gt;
        &lt;select id="unit"&gt;
          &lt;option selected&gt;Kilometer&lt;/option&gt;
          &lt;option&gt;Mile&lt;/option&gt;
        &lt;/select&gt;
   &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>I am wanting to get the value with angularJS... I have tried this..
  The scope.convert is coming when I click a button.</p>
  
  <pre><code>$scope.convert = function() {
  
  alert($scope.unit);
  };
  </code></pre>
  
  <p>It outputs "undefined".. Why is this?</p>