Resolved incompatibilities with drush 5 due to drush_invoke_process_args()
in ExtensionInfo.php line 194.

drush_invoke_process_args() was deprecated and it's not present in drush 5.

drush_invoke_process_args() was replaced with drush_invoke_process()
Merge pull request #1 from LateAtGit/7.x-1.x

Drux doesn't work with Drush 5