Update README to use addMultiOption (#104)

diff --git a/README.md b/README.md
index a23fe14..df7591a 100644
--- a/README.md
+++ b/README.md
@@ -181,13 +181,13 @@
 print(results['mode']); // prints 'off'
 ```
 
-If you need multiple values, set the `allowMultiple` parameter. In that case the
+Multiple values can be parsed with `addMultiOption()`. With this method, an
 option can occur multiple times, and the `parse()` method returns a list of
 values:
 
 ```dart
 var parser = new ArgParser();
-parser.addOption('mode', allowMultiple: true);
+parser.addMultiOption('mode');
 var results = parser.parse(['--mode', 'on', '--mode', 'off']);
 print(results['mode']); // prints '[on, off]'
 ```
diff --git a/pubspec.yaml b/pubspec.yaml
index 5d8bbf7..09ad609 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: args
-version: 1.4.3
+version: 1.4.4-dev
 author: "Dart Team <misc@dartlang.org>"
 homepage: https://github.com/dart-lang/args
 description: >