Update README.md

[jcampbell05]

Specifies that the project now uses Swift 4.2

[ghost]

	3 Warnings
⚠️	The use of Swift 3 @objc inference in Swift 4 mode is deprecated. Please address deprecated @objc inference warnings, test your code with “Use of deprecated Swift 3 @objc inference” logging enabled, and then disable inference by changing the “Swift 3 @objc Inference” build setting to “Default” for the “FBSnapshotTestCase iOS” target. (in target ‘FBSnapshotTestCase iOS’)
⚠️	VisionRectangleDetectorTests.swift#L44 - WeScanTests/VisionRectangleDetectorTests.swift#L44: constant ‘quad’ inferred to have type ‘()’, which may be unexpected let quad = VisionRectangleDetector.rectangle(forImage: ciImage) { (quad) in
⚠️	VisionRectangleDetectorTests.swift#L44 - WeScanTests/VisionRectangleDetectorTests.swift#L44: initialization of immutable value ‘quad’ was never used; consider replacing with assignment to ‘_’ or removing it let quad = VisionRectangleDetector.rectangle(forImage: ciImage) { (quad) in

	1 Message
📖	Executed 38 tests, with 0 failures (0 unexpected) in 19.166 (19.324) seconds

Current coverage for WeScan is 38.11%

✅ No files affecting coverage found

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Current coverage for WeScanSampleProject is 69.57%

✅ No files affecting coverage found

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[julianschiavo]

The Swift 3 error is for FBSnapshotTestCase, not WeScan. Can it be disabled?

@Boris-Em @AvdLee

[julianschiavo]

Can we also add a new GIF with the new design?

[Boris-Em]

@justjs, this should be done in a different PR. I created a ticket here to make sure we don't forget about it: #82

[julianschiavo]

👍