Add SPM Support

Package.swift

@@ -0,0 +1,30 @@
+// swift-tools-version:5.3
+
+import PackageDescription
+
+let package = Package(
+    name: "LayoutHelper",
+    platforms: [
+        .iOS(.v10),
+    ],
+    products: [
+        .library(
+            name: "LayoutHelper",
+            targets: ["LayoutHelper"]
+        ),
+    ],
+    dependencies: [],
+    targets: [
+        .target(
+            name: "LayoutHelper",
+            path: "LayoutHelper",
+            sources: [
+                "Classes",
+            ],
+            linkerSettings: [
+                .linkedFramework("UIKit"),
+            ]
+        ),
+    ],
+    swiftLanguageVersions: [.v5]
+)

README.md

@@ -22,6 +22,15 @@ To install LayoutHelper using [CocoaPods](http://cocoapods.org), add the followi
 ```
 pod 'LayoutHelper'
 ```
+
+### Swift Package Manager
+
+To install LayoutHelper using [Swift Package Manager](https://swift.org/package-manager), add this package to your project’s ‘Swift Packages’ section, or add the following line to your Package.swift:
+
+```swift
+.package(url: "https://github.com/tryWabbit/Layout-Helper.git", from: "0.1.0")
+```
+
 ### Manually 
 
  Drag the files manually from LayoutHelper/Classes folder to your project and you're ready to go.