Make ZeroOrMore non-greedy to make it nestable without exponential behavior.

test.js

@@ -8,7 +8,7 @@ QUnit.test('Simple', function(assert) {
   var iterable = context.rules['wikidoc'].match(context);
   assert.equal(iterable.next().value.nodes[0].innerHTML,
       '<h3>Heading</h3>This is a wiki doc.\n' +
-      'How about some <b>bold and &lt;i&gt;bold italic&lt;/i&gt;</b>.\n' +
+      "How about some <b>bold and ''bold italic</b>''.\n" +
       'I would also love some nowiki &lt;b&gt;foo&lt;/b&gt;');
 });
 
@@ -16,7 +16,8 @@ QUnit.test('Simple', function(assert) {
 QUnit.test('ZeroOrMore', function(assert) {
   assert.expect(1);
   var rules = {
-    'test': rr.Node('test', rr.ZeroOrMore(rr.MultiLineText()))
+    'test': rr.Node('test',
+      rr.Sequence(rr.ZeroOrMore(rr.MultiLineText()), rr.EndOfText()))
   };
   var context = new rr.Context(rules, 'foobar');
   var iterable = context.rules['test'].match(context);