Move Symfony namespaces constants in specific configuration file
Use service ids instead of class

Reference #12
Add some test cases
Update version to 1.1
Merge pull request #17 from arkandias33/fix-symfony-namespace

Move Symfony namespaces constants in specific configuration file
Merge pull request #18 from benja-M-1/feature/use-services

Use service ids instead of class
Remove VendorSpecific folder for 1.1
Add CodeIgniter bag manager as a service
Update doc of the configuration