3.4 carthage fixes

[zabolotiny]

Changes in this pull request

Fixed Carthage support.

Checklist

• [X] All unit tests pass.
• [X] All UI tests pass.
• [X ] Demo project builds and runs.
• [X] I added/updated tests or detailed why my change isn't tested.
• [X] I added an entry to the CHANGELOG.md for any breaking changes, enhancements, or bug fixes.
• [X] I have run swiftlint in the main directory and fixed any issues.
• [X] I have updated the SDK documentation as well as the online docs.
• [X] I have reviewed the contributing guide