Merge pull request #27 from jinSasaki/swift4

Support Swift4

Author: jinSasaki

.travis.yml

@@ -1,7 +1,7 @@
 language: objective-c
 script:
   - xcodebuild build-for-testing test-without-building -scheme VulcanTests -configuration Debug -sdk iphonesimulator -destination "name=iPhone 7" ENABLE_TESTABILITY=YES
-osx_image: xcode8.1
+osx_image: xcode9
 xcode_project: Vulcan.xcodeproj
 xcode_scheme: VulcanTests
 xcode_sdk: iphonesimulator

Sources/Vulcan/ImageDownloader.swift

@@ -69,6 +69,8 @@ open class ImageCache: ImageCachable {
     public var diskPath: String? = nil
 
     let cache = NSCache<NSString, Image>()
+    
+    public init() {}
 
     open func saveImage(image: Image, with id: String) {
         cache.setObject(image, forKey: id as NSString)

Vulcan.xcodeproj/project.pbxproj

@@ -368,7 +368,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = jp.sasakky.Vulcan;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -387,7 +387,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = jp.sasakky.Vulcan;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -399,7 +399,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = jp.sasakky.VulcanTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -411,7 +411,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = jp.sasakky.VulcanTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};