implement NSFormatter nib2cib support

Tools/nib2cib/NSAppKit.j

@@ -36,6 +36,7 @@
 @import "NSCustomView.j"
 @import "NSEvent.j"
 @import "NSFont.j"
+@import "NSFormatter.j"
 @import "NSIBObjectData.j"
 @import "NSImageView.j"
 @import "NSMatrix.j"

Tools/nib2cib/NSFormatter.j

@@ -0,0 +1,5 @@
+@implementation NSFormatter : CPObject
+{
+}
+
+@end