Add Xcode project for tests
Broaden Xcode cruft ignores for new project
Default Xcode project to 2-space indentation
Default Xcode project to 2-space indentation
Merge pull request #53 from sjmulder/xcode-indentation

Default Xcode project to 2-space indentation
Merge pull request #52 from sjmulder/xcode-tests

Add Xcode project for tests