Cocoapods support

[gsampaio]

I've been playing with your library and it's awesome. I have added support for cocoapods in order to be able to play around with it in my iOS project. I know it's still in early development and the API may change a lot before been stable, this is just the initial implementation.

Lastly I still have two warnings while running pod lib lint SnapshotTesting.podspec --verbose, and I don't know how to fix it right now. Any help would be appreciated

** BUILD SUCCEEDED **

   Testing with xcodebuild. 
 -> SnapshotTesting (0.1.0)
    - NOTE  | xcodebuild:  <module-includes>:1:9: note: in file included from <module-includes>:1:
    - NOTE  | xcodebuild:  /privateTarget Support Files/SnapshotTesting/SnapshotTesting-umbrella.h:13:9: note: in file included from /privateTarget Support Files/SnapshotTesting/SnapshotTesting-umbrella.h:13:
    - WARN  | xcodebuild:  /Users/guilhermesampaio/Dev/OSS/swift-snapshot-testing/Sources/WKSnapshotConfigurationShim/include/WKSnapshotConfigurationShim.h:2:2: warning: missing submodule 'WebKit.WKSnapshotConfiguration'
    - NOTE  | xcodebuild:  /Users/guilhermesampaio/Library/Developer/Xcode/DerivedData/App-ghdrndgqqxoolwbxhjjzystbddvp/Build/Products/Release-iphonesimulator/SnapshotTesting/SnapshotTesting.framework/Headers/SnapshotTesting-umbrella.h:13:9: note: in file included from /Users/guilhermesampaio/Library/Developer/Xcode/DerivedData/App-ghdrndgqqxoolwbxhjjzystbddvp/Build/Products/Release-iphonesimulator/SnapshotTesting/SnapshotTesting.framework/Headers/SnapshotTesting-umbrella.h:13:
    - WARN  | xcodebuild:  /Users/guilhermesampaio/Library/Developer/Xcode/DerivedData/App-ghdrndgqqxoolwbxhjjzystbddvp/Build/Products/Release-iphonesimulator/SnapshotTesting/SnapshotTesting.framework/Headers/WKSnapshotConfigurationShim.h:2:2: warning: missing submodule 'WebKit.WKSnapshotConfiguration'

Thanks for all the work on it.

[stephencelis]

Nice! Thanks so much for contributing!

I'm not sure those warnings can be avoided right now. Apple forgot to expose a header for WebKit snapshots in the latest release 😨

I'm not a CocoaPods expert, so I'm not sure if there's a way of splitting a pod into multiple modules the way SPM does (if so, we could avoid maintaining the #if COCOAPODS logic), but this looks like a good solution if not!

[mbrandonw]

nice!

I too am curious of cocoapods allows a single repo to house many pods, but I'm not familiar enough with this stuff. down to merge as-is tho!

[stephencelis]

Thanks again!