diff --git a/BarcodeScanner.xcodeproj/project.pbxproj b/BarcodeScanner.xcodeproj/project.pbxproj
index 66c0a6f..aab7016 100644
--- a/BarcodeScanner.xcodeproj/project.pbxproj
+++ b/BarcodeScanner.xcodeproj/project.pbxproj
@@ -166,6 +166,7 @@
 				D5B2E89B1C3A780C00C0327D /* Frameworks */,
 				D5B2E89C1C3A780C00C0327D /* Headers */,
 				D5B2E89D1C3A780C00C0327D /* Resources */,
+				D5C113C9201A981500D46C9C /* SwiftLint */,
 			);
 			buildRules = (
 			);
@@ -221,6 +222,23 @@
 		};
 /* End PBXResourcesBuildPhase section */
 
+/* Begin PBXShellScriptBuildPhase section */
+		D5C113C9201A981500D46C9C /* SwiftLint */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = SwiftLint;
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "if which swiftlint >/dev/null; then\nswiftlint\nelse\necho \"warning: SwiftLint not installed, download from https://github.com/realm/SwiftLint\"\nfi";
+		};
+/* End PBXShellScriptBuildPhase section */
+
 /* Begin PBXSourcesBuildPhase section */
 		D5B2E89A1C3A780C00C0327D /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
diff --git a/Sources/Controllers/CameraViewController.swift b/Sources/Controllers/CameraViewController.swift
index 18d411a..d969e63 100644
--- a/Sources/Controllers/CameraViewController.swift
+++ b/Sources/Controllers/CameraViewController.swift
@@ -114,11 +114,13 @@ public final class CameraViewController: UIViewController {
   public override func viewWillTransition(to size: CGSize,
                                           with coordinator: UIViewControllerTransitionCoordinator) {
     super.viewWillTransition(to: size, with: coordinator)
-    coordinator.animate(alongsideTransition: { [weak self] _ in
-      self?.setupVideoPreviewLayerOrientation()
-    }) { [weak self] _ in
-      self?.animateFocusView()
-    }
+    coordinator.animate(
+      alongsideTransition: { [weak self] _ in
+        self?.setupVideoPreviewLayerOrientation()
+      },
+      completion: ({ [weak self] _ in
+        self?.animateFocusView()
+      }))
   }
 
   // MARK: - Video capturing
@@ -220,9 +222,10 @@ public final class CameraViewController: UIViewController {
 
     regularFocusViewConstraints.deactivate()
     animatedFocusViewConstraints.activate()
-    
+
     UIView.animate(
-      withDuration: 1.0, delay:0,
+      withDuration: 1.0,
+      delay: 0,
       options: [.repeat, .autoreverse, .beginFromCurrentState],
       animations: ({ [weak self] in
         self?.view.layoutIfNeeded()
@@ -300,7 +303,7 @@ private extension CameraViewController {
     videoPreviewLayer.frame = view.layer.bounds
 
     if let connection = videoPreviewLayer.connection, connection.isVideoOrientationSupported {
-      switch (UIApplication.shared.statusBarOrientation) {
+      switch UIApplication.shared.statusBarOrientation {
       case .portrait:
         connection.videoOrientation = .portrait
       case .landscapeRight:
@@ -336,7 +339,7 @@ private extension CameraViewController {
     let button = UIButton(type: .system)
     let title = NSAttributedString(
       string: localizedString("BUTTON_SETTINGS"),
-      attributes: [.font: UIFont.boldSystemFont(ofSize: 17), .foregroundColor : UIColor.white]
+      attributes: [.font: UIFont.boldSystemFont(ofSize: 17), .foregroundColor: UIColor.white]
     )
     button.setAttributedTitle(title, for: UIControlState())
     button.sizeToFit()