tell travis to use phpunit required via composer #54
tell travis to use phpunit required via composer #54

  Needed to solve version conflicts in shared dependencies with
  phpunit. Alternative solutiion is to use symfony/phpunit-bridge.

knutschsoft/swapp,pueppiblue/swapp,knutschsoft/swapp,pueppiblue/swapp,knutschsoft/swapp,pueppiblue/swapp,pueppiblue/swapp