fixed php doc for codeception
added phar file check to load the phar autoloader instead of the vendor directories. Allows you to use composer and robo together without robo being a dependency in composer.json preventing Robo\Runner\ not found error
fixes #26 to use robo.phar standalone without vendor dir
Merge pull request #28 from pmcjury/master

fixes #26 to use robo.phar standalone even if vendor dir exists, and you don't have Robo as a dependency