Merge pull request #85 from cody/master

Fix property itemID

Author: yannickcr

lib/rules/no-unknown-property.js

@@ -23,7 +23,7 @@ var DOM_PROPERTY_NAMES = [
   'crossOrigin', 'dateTime', 'encType', 'formAction', 'formEncType', 'formMethod', 'formNoValidate', 'formTarget',
   'frameBorder', 'hrefLang', 'htmlFor', 'httpEquiv', 'marginHeight', 'marginWidth', 'maxLength', 'mediaGroup',
   'noValidate', 'radioGroup', 'readOnly', 'rowSpan', 'spellCheck', 'srcDoc', 'srcSet', 'tabIndex', 'useMap',
-  'itemProp', 'itemScope', 'itemType', 'itemRef', 'itemId'
+  'itemProp', 'itemScope', 'itemType', 'itemRef', 'itemID'
 ];
 
 // ------------------------------------------------------------------------------