Document Xcode 7 setup procedure

README.md

@@ -33,21 +33,26 @@ $ bundle
 
 ## Usage
 
-Set up your project for test coverage:
+Apple drastically improved the support for code coverage in Xcode 7, including dedicated UI for enabling it. You can now setup your project for test coverage inside the scheme editor, by ticking the *"Gather coverage data"* checkbox:
+
+![](README_Images/test_scheme.png)
+
+To verify you're ready to generate test coverage, run your test suite on your project, and then run:
 
 ```sh
-$ slather setup path/to/project.xcodeproj
+$ slather coverage -s path/to/project.xcodeproj
 ```
 
-This will enable the `Generate Test Coverage` and `Instrument Program Flow` flags for your project.
-
+### Previous versions of Xcode
 
-To verify you're ready to generate test coverage, run your test suite on your project, and then run:
+Set up your project for test coverage:
 
 ```sh
-$ slather coverage -s path/to/project.xcodeproj
+$ slather setup path/to/project.xcodeproj
 ```
 
+This will enable the `Generate Test Coverage` and `Instrument Program Flow` flags for your project.
+
 ### Usage with Codecov
 
 Login to [Codecov](https://codecov.io/) (no need to activate a repository, this happens automatically). Right now, `slather` supports Codecov via **all** supported CI providers [listed here](https://github.com/codecov/codecov-bash#ci-providers).