diff --git a/README.md b/README.md
index bfe53e6..50ca4b5 100644
--- a/README.md
+++ b/README.md
@@ -21,9 +21,10 @@ npm install frappe-gantt
 ```
 
 ### Usage
-Include it in your html:
+Include it in your HTML:
 ```
 <script src="frappe-gantt.min.js"></script>
+<link rel="stylesheet" href="frappe-gantt.css">
 ```
 
 And start hacking:
@@ -43,6 +44,23 @@ var tasks = [
 var gantt = new Gantt("#gantt", tasks);
 ```
 
+You can also pass various options to the Gantt constructor:
+```js
+var gantt = new Gantt("#gantt", tasks, {
+    header_height: 50,
+    column_width: 30,
+    step: 24,
+    view_modes: ['Quarter Day', 'Half Day', 'Day', 'Week', 'Month'],
+    bar_height: 20,
+    bar_corner_radius: 3,
+    arrow_curve: 5,
+    padding: 18,
+    view_mode: 'Day',   
+    date_format: 'YYYY-MM-DD',
+    custom_popup_html: null
+});
+```
+
 If you want to contribute:
 
 1. Clone this repo.