README Clarity Update

[alanguerin]

In the documentation it specifies the following:

<?php
return array(
    'modules' => array(
        // ...
        'AssetsBundle',
    ),
    // ...
);

The documentation shows that it's ok for the AssetsBundle module to be inserted at the end of the modules array. It should be noted that the order of the modules is important here. An issue arose for me where I blindly followed the README and the configuration in the AssetsBundle module was overwriting my own module's configuration.

[alanguerin]

I'll try write up something a little later and issue a pull request.