Xcode9: wrap execution of each step in XCTContext.runActivity so the logging in Xcode Test Results increases a lot in readability, and traceability from the feature file back to the results in Xcode.
Xcode9: wrap execution of each step in XCTContext.runActivity so the logging in Xcode Test Results increases a lot in readability, and traceability from the feature file back to the results in Xcode.

net-a-porter-mobile/XCTest-Gherkin,net-a-porter-mobile/XCTest-Gherkin,net-a-porter-mobile/XCTest-Gherkin,net-a-porter-mobile/XCTest-Gherkin