Merge pull request #101 from IgorMuzyka/master

Updated Package.swift definition to be compatible with the latest swift package manager

Package.swift

@@ -1,5 +1,15 @@
+// swift-tools-version:4.2
+
 import PackageDescription
 
 let package = Package(
-    name: "KeychainSwift"
+    name: "KeychainSwift",
+    products: [
+        .library(name: "KeychainSwift", targets: ["KeychainSwift"]),
+    ],
+    dependencies: [
+    ],
+    targets: [
+        .target(name: "KeychainSwift", dependencies: [], path: "Sources"),
+    ]
 )