Use 'String(describing:)' to silence compiler warning (#222)
Use 'String(describing:)' to silence compiler warning (#222)

Silence warning "String interpolation produces a debug description for an optional value"
facebook/ios-snapshot-test-case,facebook/ios-snapshot-test-case,Nuglif/ios-snapshot-test-case,onemedical/ios-snapshot-test-case,peacemoon/ios-snapshot-test-case,facebook/ios-snapshot-test-case,Nuglif/ios-snapshot-test-case,onemedical/ios-snapshot-test-case,Nuglif/ios-snapshot-test-case,material-foundation/ios-snapshot-test-case,material-foundation/ios-snapshot-test-case,material-foundation/ios-snapshot-test-case,peacemoon/ios-snapshot-test-case,peacemoon/ios-snapshot-test-case,onemedical/ios-snapshot-test-case,material-foundation/ios-snapshot-test-case