Fix error in example for printing dates, clarify comments in general

README.md

Index: README.md
diff --git a/README.md b/README.md
index 2f789a2acbf793aadb450289fdbb2ff90d72b649..142c6dd817408c1c781059d9b22f4daeaff92a47 100644
--- a/README.md
+++ b/README.md
@@ -39,12 +39,21 @@ the [withLocale][withLocale] operation may be preferable to setting
       Intl.withLocale('fr', () => print(myLocalizedMessage());
 
 To specify the locale for an operation you can create a format object in
-a specific locale, or pass in the locale as a parameter to methods.
+a specific locale, pass in the locale as a parameter to methods, or
+set the default locale.
 
       var format = new DateFormat.yMd("ar");

[kevmoo, 2015/07/10 23:31:03]

consider using

```dart
void noNeedToIndent() {}
```

for code samples. 

[Alan Knight, 2015/07/11 00:07:34]

Done.

       var dateString = format.format(new DateTime.now());
+
+or
+	  
       print(myMessage(dateString, locale: 'ar');
 
+or
+
+      Intl.defaultLocale = "es"'
+	  new DateFormat.jm().format(new DateTime.now());
+
 ## Initialization
 
 All the different types of locale data require an async initialization step