![image](https://cloud.githubusercontent.com/assets/1625891/2979853/79208e16-dbd8-11e3-94aa-418b4eda280b.png)

This pr can be use in my scenario. just wanna cancel the search.focus event handler. 

```javascript
 $(element).select2({
    shouldFocusInput: function(){return false;},
});
```
The above code will allow me to better control the input event handler.It's work for me.

And sorry for my english.  thanks!