title: Passing url to read as a parameter in kendoui datasource
body: <p>Let's say I have this kind of simple dataSource:</p>
  
  <pre><code>var TasksSource = new kendo.data.DataSource({
  
       transport: {
           read: {
            url: 'some url',
            dataType: "json"
          }
      }
  });
  </code></pre>
  
  <p>And I want to use it several times, but with different urls. I couldn't find anywhere how to pass this to dataSource. And I don't want to use global variable. I was trying with custom methods, like for example <code>setUrl: function() .. etc</code> but eventually it didn't work</p>