[phpunit] Upgrades phpunit to version 4 and adds some changes to the code to use feature available in this version
[behat] Removes a context that requires phpunit 3.7
[composer] Update bundle's dependenies. Update phpunit to version 4.1
[phpunit] Removes unnecessary changes
Merge pull request #17 from kimu/update-phpunit

[phpunit] Upgrades phpunit to version 4 and adds some changes to the code to use feature available in this version