SPM support

Package.swift

@@ -0,0 +1,24 @@
+// 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: "SHPKeyboardAwareness",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "SHPKeyboardAwareness",
+            targets: ["SHPKeyboardAwareness"]),
+    ],
+    dependencies: [
+    ],
+    targets: [
+        .target(
+            name: "SHPKeyboardAwareness",
+            dependencies: [],
+            path: ".",
+            sources: ["Source"],
+            publicHeadersPath: "Source"
+        )
+    ]
+)