Updates fro SPM

Package.resolved

@@ -0,0 +1,34 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "Alamofire",
+        "repositoryURL": "https://github.com/Alamofire/Alamofire",
+        "state": {
+          "branch": null,
+          "revision": "747c8db8d57b68d5e35275f10c92d55f982adbd4",
+          "version": "4.9.1"
+        }
+      },
+      {
+        "package": "Arrow",
+        "repositoryURL": "https://github.com/freshOS/Arrow",
+        "state": {
+          "branch": null,
+          "revision": "ede0996c0b8f32a67bba80ae384f0898e9a8cb95",
+          "version": "5.1.2"
+        }
+      },
+      {
+        "package": "Then",
+        "repositoryURL": "https://github.com/freshOS/Then",
+        "state": {
+          "branch": null,
+          "revision": "7b20f33ca37c6ecc9420c4b699b641dbca504912",
+          "version": "5.1.3"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Package.swift

@@ -1,10 +1,18 @@
+// swift-tools-version:5.1
+// The swift-tools-version declares the minimum version of Swift required to build this package.
 import PackageDescription
 
 let package = Package(
     name: "ws",
+    platforms: [.iOS(.v8)],
+    products: [.library(name: "ws", targets: ["ws"])],
     dependencies: [
-        .Package(url: "https://github.com/freshOS/Arrow",
-        .Package(url: "https://github.com/freshOS/then",
-        .Package(url: "https://github.com/Alamofire/Alamofire"
+        .package(url: "https://github.com/freshOS/Arrow", .exact("5.1.2")),
+        .package(url: "https://github.com/freshOS/Then", .exact("5.1.3")),
+        .package(url: "https://github.com/Alamofire/Alamofire", .exact("4.9.1"))
+    ],
+    targets: [
+        .target(name: "ws", dependencies:["Arrow", "Then", "Alamofire"]),
+        .testTarget(name: "wsTests", dependencies: ["ws"])
     ]
 )

ws/WSNetworkIndicator.swift → Sources/ws/WSNetworkIndicator.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import UIKit
 
 /**
     Abstracts network activity indicator management.