Update README.markdown

Updating to literal syntax

README.markdown

@@ -58,7 +58,7 @@ Mapping (Sequence, NSArray, partially on NSSet, NSDictionary)
     }]
     // returns sequence(@"ONE", @"TWO", @"THREE", nil)
 
-    [array(@"one", array(@"two", nil), @"three", nil) flatMap:^(NSString *item){
+    [@[@"one", @[@"two"], @"three"] flatMap:^(NSString *item){
         return [item uppercaseString];
     }];
     // returns array(@"ONE", @"TWO", @"THREE", nil)
@@ -127,4 +127,4 @@ So I'm a bit fed up with using 'libraries' that say, just include our source cod
 - Import the framework to your project.
 - Jobsa good 'un.
 
-
+