Updated the getXmlErrors function to the Symfony required one

After updating to Symfony 2.1 RC2 the getXmlErrors function had expanded with the required variable: $internalErrors.

The libxml_use_internal_errors($internalErrors); is also new since Symfony 2.1 RC2
Merge pull request #32 from xyanide/master

Fixed the getXmlErrors function that changed since Symfony 2.1 RC 2
Added MIT LICENSE file

Conflicts:
	README.md
Updated .travis.yml
Fixed tests
Updated composer.json and .travis.yml
Fixed README.md
Updated .travis.yml and composer.json
Fixed typo
Fixed YamlFileLoader
Updated README.md
Disabled XmlFileLoader
Update Routing/I18nRoute.php
Merge branch 'master' of https://github.com/smottt/BeSimpleI18nRoutingBundle