Add missing NSNotification.Name.init(_:)

Author: ikesyo

Foundation/NSNotification.swift

@@ -10,6 +10,11 @@
 open class NSNotification: NSObject, NSCopying, NSCoding {
     public struct Name : RawRepresentable, Equatable, Hashable {
         public private(set) var rawValue: String
+
+        public init(_ rawValue: String) {
+            self.rawValue = rawValue
+        }
+
         public init(rawValue: String) {
             self.rawValue = rawValue
         }

TestFoundation/TestNotification.swift

@@ -12,6 +12,7 @@ class TestNotification : XCTestCase {
     static var allTests: [(String, (TestNotification) -> () throws -> Void)] {
         return [
             ("test_customReflection", test_customReflection),
+            ("test_NotificationNameInit", test_NotificationNameInit),
         ]
     }
 
@@ -41,4 +42,8 @@ class TestNotification : XCTestCase {
 
     }
 
+    func test_NotificationNameInit() {
+        let name = "TestNotificationNameInit"
+        XCTAssertEqual(Notification.Name(name), Notification.Name(rawValue: name))
+    }
 }