Merge pull request #49 from jrcmramos/#43-SPM

#43 Add support to SPM

Author: kazuhiro4949

Package.swift

@@ -0,0 +1,16 @@
+// swift-tools-version:5.1
+import PackageDescription
+
+let package = Package(
+    name: "SwiftyXMLParser",
+    platforms: [.iOS(.v8), .macOS(.v10_10)],
+    products: [
+        .library(name: "SwiftyXMLParser", targets: ["SwiftyXMLParser"])
+    ],
+    dependencies: [
+    ],
+    targets: [
+        .target(name: "SwiftyXMLParser", dependencies: [], path: "SwiftyXMLParser"),
+        .testTarget(name: "SwiftyXMLParserTests", dependencies: ["SwiftyXMLParser"], path: "SwiftyXMLParserTests")
+    ]
+)