Add SwiftPM manifest and localized string lookup

.gitignore

@@ -37,7 +37,9 @@ playground.xcworkspace
 # Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
 # Packages/
 # Package.pins
+Package.resolved
 .build/
+.swiftpm/
 
 # CocoaPods
 #

AssetsPickerViewController/Classes/Utility/String+AssetsPickerViewController.swift

@@ -15,7 +15,11 @@ extension String {
             let customConfig = AssetsPickerConfig.customStringConfig,
             let localizedKey = AssetsPickerLocalizedStringKey(rawValue: key),
             let string = customConfig[localizedKey] else {
+#if SWIFT_PACKAGE
+                self = Bundle.module.localizedString(forKey: key, value: key, table:  "AssetsPickerViewController")
+#else
                 self = Bundle.assetsPickerBundle.localizedString(forKey: key, value: key, table:  "AssetsPickerViewController")
+#endif
                 return
         }
         self = string

Package.swift

@@ -0,0 +1,27 @@
+// swift-tools-version:5.3
+import PackageDescription
+
+let package = Package(
+    name: "AssetsPickerViewController",
+    defaultLocalization: "en",
+    platforms: [.iOS(.v10)],
+    products: [
+        .library(
+            name: "AssetsPickerViewController",
+            targets: ["AssetsPickerViewController"]
+        )
+    ],
+    dependencies: [
+        .package(url: "https://github.com/SnapKit/SnapKit", from: "5.0.1")
+    ],
+    targets: [
+        .target(
+            name: "AssetsPickerViewController",
+            dependencies: ["SnapKit"],
+            path: "AssetsPickerViewController",
+            sources: ["Classes"],
+            resources: [.process("Assets")]
+        )
+    ],
+    swiftLanguageVersions: [.v4_2, .v5]
+)

README.md

@@ -101,10 +101,10 @@ Customizable Album & Asset Layout
 
 - multiple selection by dragging cells (from iOS 13)
 
+- SPM(Swift Package Manager) support
 
-## Features To-do
 
-- SPM(Swift Package Manager) support
+## Features To-do
 
 - Cropping image before select