Update symfony.md
Update README.md
Changed default value_format option in entity field
Updated travis ci configuration
Merge pull request #40 from norzechowicz/entity-field

Changed default value_format option in entity field
Install phpunit with composer
Merge pull request #44 from norzechowicz/tests

Install phpunit with composer
Update composer.json
Quality fixes
Merge pull request #47 from norzechowicz/code-quality

Quality fixes
Travis - add notifications
Merge pull request #48 from Wasper/wasper

Travis - add notifications
Small refactoring
Merge pull request #50 from norzechowicz/refactoring

Small refactoring
Added collection column type
Updated docs
Removed empty lines
Removed useless casting value to array
Merge pull request #51 from norzechowicz/array-column

Collection column type