'make test' should specify the iphonesimulator SDK for running tests.
'make test' should specify the iphonesimulator SDK for running tests.

Without this, we'll get the project default which is 'iphoneos' for ARM,
and then we won't be able to run the tests.

target/ObjectiveSugar,Anish-kumar-dev/ObjectiveSugar,onevcat/ObjectiveSugar,orta/ObjectiveSugar,gank0326/ObjectiveSugar,ManagerOrganization/ObjectiveSugar,oarrabi/ObjectiveSugar,rizvve/ObjectiveSugar,supermarin/ObjectiveSugar