Added field for default store view #115

*Added filed to provide the default value in magento export
configuration
Added store view
Export with custom default store added #115
Fix phpspecs for defaultStoreView #115
Fix cs #115
Fix for PR #127
Fix for PR #127
Merge pull request #127 from akeneo/enhancement/storeviewconf

Enhancement/storeviewconf
Improve phpspec to make them more compliant #128

*replace all Agrument::Any() by Argument::any()
*remove instanciation of MagentoSoapClientParameters and mocked it
Improve phpspec to make them more compliant #128

*Removed instances of MagentoSoapClientParameters and mocked it
Merge pull request #129 from akeneo/enhancement/improvephpspecs

Enhancement/improvephpspecs
Merge branch 'master' into maintenance/validatorsSpec