Fixed path names to use composer instaled vendors

With these modifications I was able to run:

`php ../../migrations_doctrine/build/doctrine-migrations.phar migrations:status --db-configuration=db-config.php`

And got: 
![migrations](https://f.cloud.github.com/assets/915930/1521895/a30fac74-4b9c-11e3-8e01-5b4aa8287a28.png)