Included "code-generator" component into composer.json
Deleted CodeGenerator and CodeGeneratorInterface
Deleted CodeGenerator test.
Created CardCodeGenerator class. Implement "generateCode" method.
Created Test for CardCodeGenerator class.
Refactored CardManager and CardmanagerTest using CardCodeGenerator class and dql-fit.
Merge pull request #9 from mectwork/refactor-with-code-generator

Refactored using "code-generator" and "dql-fit" components