Add Xcode-updated project file.

Report error if given a status response like an error.

Fix bugs in tests and add one.

Add more detail to `README.md`.

Reorganize & clean up tests.

Add more tests.

Add more tests.

Fix retrieve data test.

Add sample test command to `README.md`.

Update pod manifest uuid.

Remove whitespace.

Fix test settings to look at the right target & allow testing host application APIs.

Clean up and add to tests.

Add more detail to README.md.

Clean up code to remove force casts.