MC-100: Process and normalize attribute to ApiImport format
MC-100: Process and normalize attribute to ApiImport format
MC-100: Add specs
MC-100: Add a reader to filter identifier attributes
MC-100: Refactor attribute normalizer and mapping helper
MC-100: Update specs
MC-100: Update attribute reader, add a param in query and class doc
MC-100: UPdate for PR
Merge pull request #306 from akeneo/MC-100

MC-100: Process and normalize attribute to ApiImport format