Scaffold and iOS lib project using Carthage

IOS_LIB_CARTHAGE.md

1. Create a Cartfile with needed dependencies
2. Create a Cartfile.private with internal/test dependencies carthage update
3. Launch Xcode and create a new workspace: File → New → Workspace
4. Create a Library project: File → New → Project → Cocoa Touch Framework Be sure to add it to the recently created Workspace and group to the Workspace
5. Create an App project: File → New → Project → Single View App
   1. Add it to the recently created Workspace and group to the Workspace
6. Enable your library project to provide a shared schema: (Target selector) → Manage Schemas…
7. Link the Library project to the App project: (Select App project → Target) → General → Linked Frameworks and Libraries
8. Set the Framework Search Path for both projects to contain: $(SRCROOT)/../Carthage/Build/iOS (non-recursive)
9. Add the dependencies fetched by Carthage to the build targets:
   1. Select the Library's test target → Build Phases → Link Binary With Libraries → (add frameworks from Carthage/Build/iOS/)
   2. Add a Copy Files Phase to copy the added Frameworks to "Frameworks"