Swift-内购封装swift版本

{ "images" : [ { "idiom" : "universal", "platform" : "ios", "size" : "1024x1024" }, { "idiom" : "mac", "scale" : "1x", "size" : "16x16" }, { "idiom" : "mac", "scale" : "2x", "size" : "16x16" }, { "idiom" : "mac", "scale" : "1x", "size" : "32x32" }, { "idiom" : "mac", "scale" : "2x", "size" : "32x32" }, { "idiom" : "mac", "scale" : "1x", "size" : "128x128" }, { "idiom" : "mac", "scale" : "2x", "size" : "128x128" }, { "idiom" : "mac", "scale" : "1x", "size" : "256x256" }, { "idiom" : "mac", "scale" : "2x", "size" : "256x256" }, { "idiom" : "mac", "scale" : "1x", "size" : "512x512" }, { "idiom" : "mac", "scale" : "2x", "size" : "512x512" } ], "info" : { "author" : "xcode", "version" : 1 } }