XCTests will fail on compilation errors

**Undefined symbols for architecture i386 > Symbol: _OBJC_CLASS_$_LPUIARouteOverSharedElement > Referenced from: objc-class-ref in CalabashServer.o** [#629](https://github.com/calabash/calabash-ios/issues/629)

Tests that should fail are passing.  This pull request addresses this problem.

This PR will fail on travis; it is expected.