Merge pull request contentful#57 from contentful/bugfix/spm

Fix Package.swift

Author: loudmouth

Package.pins

@@ -0,0 +1,18 @@
+{
+  "autoPin": true,
+  "pins": [
+    {
+      "package": "Interstellar",
+      "reason": null,
+      "repositoryURL": "https://github.com/jensravens/Interstellar",
+      "version": "2.0.0"
+    },
+    {
+      "package": "ObjectMapper",
+      "reason": null,
+      "repositoryURL": "https://github.com/Hearst-DD/ObjectMapper",
+      "version": "2.2.6"
+    }
+  ],
+  "version": 1
+}

Package.swift

@@ -3,7 +3,7 @@ import PackageDescription
 let package = Package(
     name: "Contentful",
     dependencies: [
-        .Package(url: "https://github.com/Hearst-DD/ObjectMapper", majorVersion: 2, minorVersion: 2),
+        .Package(url: "https://github.com/Hearst-DD/ObjectMapper", majorVersion: 2, minor: 2),
         .Package(url: "https://github.com/jensravens/Interstellar", majorVersion: 2)
     ],
     exclude: ["Tests/"]