Test building Kiwi via Carthage on CI

[sharplet]

Fixes #631.

[sharplet]

So unfortunately CI is currently never getting to the step I added because of the regression described in #652 (the first test run doesn't pass and so no other tests run).

When running this locally on my machine, I discovered another issue: the podspec appears to no longer lint correctly under 1.0:

% pod lib lint

 -> Kiwi (2.4.0)
    - ERROR | xcodebuild: Returned an unsuccessful exit code. You can use `--verbose` for more information.
    - NOTE  | xcodebuild:  $HOME/Library/Developer/Xcode/DerivedData/App-fedcijoiwrqxyugjwefskiujgwum/Build/Products/Release-iphonesimulator/Kiwi/Kiwi.framework/Headers/Kiwi.h:8:9: fatal error: 'XCTest/XCTest.h' file not found
    - NOTE  | xcodebuild:  /var/folders/nl/09nb5jwj5934y_z1cl7wbxg00000gn/T/CocoaPods/Lint/App/main.m:3:9: fatal error: could not build module 'Kiwi'
    - NOTE  | [OSX] xcodebuild:  $HOME/Library/Developer/Xcode/DerivedData/App-fedcijoiwrqxyugjwefskiujgwum/Build/Products/Release/Kiwi/Kiwi.framework/Headers/Kiwi.h:8:9: fatal error: 'XCTest/XCTest.h' file not found

@orta any ideas?

[orta]

Offhand, I don't, but I expect Specta may have the same problem as the Podspecs look the same

[orta]

Rough gist is here: Quick/Quick#530 (comment) - fix is this: specta/specta@f69bdfa

[sharplet]

Closing this as it's stale.