Merge pull request #14 from dspasic/checkstyle-violation-I

fix checkstyle violations
Merge pull request #16 from dspasic/unittest-I

Finished the test case forCountry
Merge pull request #17 from dspasic/master

add support information in composer
Merge pull request #18 from dspasic/unittest-cart-create

add unit tests for cart create operation
Merge pull request #19 from dspasic/unittest-request-factory

Unittest request factory
Merge pull request #20 from dspasic/unittest-object-to-array

Unittest object to array
Merge pull request #21 from dspasic/unittest-response-transfomer-factory

Unittest response transfomer factory
added api documentation
Add test for response transformer