Add Swift Package Manager support (#3)

.gitignore

@@ -0,0 +1 @@
+.swiftpm/

Package.resolved

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+{
+  "object": {
+    "pins": [
+      {
+        "package": "SnapshotTesting",
+        "repositoryURL": "https://github.com/pointfreeco/swift-snapshot-testing.git",
+        "state": {
+          "branch": null,
+          "revision": "f8a9c997c3c1dab4e216a8ec9014e23144cbab37",
+          "version": "1.9.0"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Package.swift

@@ -0,0 +1,31 @@
+// swift-tools-version:5.2
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "ios-accessibility-text-snapshot",
+    platforms: [
+        .iOS(.v12),
+    ],
+    products: [
+        .library(
+            name: "ios-accessibility-text-snapshot",
+            targets: ["ios-accessibility-text-snapshot"]
+        ),
+    ],
+    dependencies: [
+        .package(
+            name: "SnapshotTesting",
+            url: "https://github.com/pointfreeco/swift-snapshot-testing.git",
+            .upToNextMajor(from: "1.8.0")
+        )
+    ],
+    targets: [
+        .target(
+            name: "ios-accessibility-text-snapshot",
+            dependencies: ["SnapshotTesting"],
+            path: "Sources"
+        )
+    ]
+)

Sources/Accessibility.testing.swift

@@ -1,4 +1,4 @@
-import Foundation
+import UIKit
 
 import SnapshotTesting