* <p>Small helper class to make creating {@link Ext.data.Store}s from different domain JSON data easier.
* A JsonPStore will be automatically configured with a {@link Ext.data.reader.Json} and a {@link Ext.data.proxy.JsonP JsonPProxy}.</p>
* <p>A store configuration would be something like:<pre><code>
* <p>Small helper class to make creating {@link Ext.data.Store}s from different domain JSON data easier.
* A JsonPStore will be automatically configured with a {@link Ext.data.reader.Json} and a {@link Ext.data.proxy.JsonP JsonPProxy}.</p>
* <p>A store configuration would be something like:<pre><code>