fix README

README.md

@@ -13,6 +13,7 @@ npm install
 | Parameters  | Options | Description |
 |--|--|--|
 |editMode| false (default) | Enable doodle's backend|
+|vertical| false (default) | Enable doodle's front vertical display|
 |inputSelector| '' | jQuery selector input to attach or select json|
 |defaultHours|[] (default)|Set default hours|
 |outputDateFormat|''|Define output date format|
@@ -75,4 +76,4 @@ Include all dependencies
 
 <script src="assets/lib/doodle/js/doodle.js" type="text/javascript"></script>
 <script src="js/app.js" type="text/javascript"></script>
-```
\ No newline at end of file
+```