[SwiftPM] Remove test dependencies from Package.swift

.Package.test.swift

@@ -0,0 +1,10 @@
+import PackageDescription
+
+let package = Package(
+    name: "Commandant",
+    dependencies: [
+        .Package(url: "https://github.com/antitypical/Result.git", majorVersion: 3, minor: 0),
+        .Package(url: "https://github.com/Quick/Nimble", majorVersion: 5),
+        .Package(url: "https://github.com/Quick/Quick", majorVersion: 0, minor: 10),
+    ]
+)

.travis.yml

@@ -19,7 +19,10 @@ matrix:
       osx_image: xcode8
       language: objective-c
       env: JOB=SPM
-    - script: swift build && swift test
+    - script:
+        - mv .Package.test.swift Package.swift
+        - swift build
+        - swift test
       env: JOB=Linux
       sudo: required
       dist: trusty

Package.swift

@@ -2,16 +2,7 @@ import PackageDescription
 
 let package = Package(
     name: "Commandant",
-    dependencies: {
-        #if os(macOS)
-            return [
-                .Package(url: "https://github.com/antitypical/Result.git", majorVersion: 3, minor: 0),
-            ]
-        #else
-            return [
-                .Package(url: "https://github.com/antitypical/Result.git", majorVersion: 3, minor: 0),
-                .Package(url: "https://github.com/Quick/Quick", majorVersion: 0, minor: 10),
-            ]
-        #endif
-    }()
+    dependencies: [
+        .Package(url: "https://github.com/antitypical/Result.git", majorVersion: 3, minor: 0),
+    ]
 )