This post describe the easy way to add twitter update on your website. To do this just follow procedures:

1. Login your twitter account and go to the link https://twitter.com/settings/widgets

2. Create the widget and configure your desired widget. To know details configure go to the twitter official embedded timelines link https://dev.twitter.com/docs/embedded-timelines#customization

3. In the last time click "Save change" and copy the script code from textarea box and past it to your website where you want to display the twitter update timeline.