Add compatibility for Symfony 3.0

Merge pull request #6 from BenoitLeveque/fix-compat-issue

Fix compat issue with symfony 3.0 and form extensentio

Add compatibility for PHP 7.0 and Symfony 2.8

Merge pull request #4 from BenoitLeveque/add-php7-symfony-28

 Allow usage with PHP 7.0

Add an option to configure date_time formats

v1.0.2

Add an option to configure the date_time patterns

Add Pattern constraint for Parsley

Supports DateTime, Date and Time Symfony's constraints

First stable version

v1.0.0

Fix wrong condition when checking if parsley is enabled