Merge pull request #1079 from ianpartridge/nsdecimalnumberhandler

NSDecimalNumberHandler: default is now a property
diff --git a/Foundation/NSDecimalNumber.swift b/Foundation/NSDecimalNumber.swift
index 1e049d6..06d4aa4 100644
--- a/Foundation/NSDecimalNumber.swift
+++ b/Foundation/NSDecimalNumber.swift
@@ -408,7 +408,7 @@
         }
     }
     
-    open class func `default`() -> NSDecimalNumberHandler {
+    open class var `default`: NSDecimalNumberHandler {
         return defaultBehavior
     }
     // rounding mode: NSRoundPlain