Make Testable compile again. Why was it using GCC?

Fixes #182.
Update project settings
Merge pull request #185 from gfontenot/gf-update-project-settings

Update project settings
Adding stepToScrollView… method.
Merge pull request #187 from nerdery-isaac/master

Adding a step to scroll a view
Merge pull request #184 from square/puls/fix-testable

Make Testable compile again. Why was it using GCC?
Merge remote-tracking branch 'square-master/master' into teamcity-integration