Cannot find in scope error

Nobody has claimed this yet.

I followed the tutorial to setup Earlgrey in Xcode, things seems to be fine until I pasted the `Earlgrey.swift` and tried to run the sample code, Xcode threw the error of `Cannot find in scope error` for all the lines of code in the `Earlgrey.swift` ascwell for the sample code I tried running.

Please, what's the way forward. Thanks.
```
Swift Compiler Error Group
Cannot find 'grey_keyWindow' in scope
Cannot find 'grey_tap' in scope
Cannot find 'grey_sufficientlyVisible' in scope
```

The simple test code
```
func testExample() throws {
// UI tests must launch the application that they test.
let app = XCUIApplication()
app.launch()
EarlGrey.selectElement(with: grey_keyWindow()).perform(grey_tap())
.assert(grey_sufficientlyVisible())

// Use recording to get started writing UI tests.
// Use XCTAssert and related functions to verify your tests produce the correct results.
}
```

Start with the tutorial setup in Xcode, the pasted Earlgrey.swift file, and the sample UI test, then reproduce the reported compiler errors for grey_keyWindow, grey_tap, and grey_sufficientlyVisible. Done means the sample compiles and runs without the cannot-find-in-scope errors; the issue names no specific repository tests or additional files.

Written by the indexing model from the issue text.