Add support for PHPUnit options to php-unit hook

[cmuench]

Adds options to phpunit hook. In my case i have a subfolder with test. I need to add the path to the phpunit.xml or phpuni.xml.dist file (or the folder containing the file).

Example:

hooks:
   - id: php-unit
      args:
         - "-c"
         - "tests/unit"
         - "debug"

[cmuench]

Any reaction here?

[FatherShawn]

See #22