Create a mobile site for already existing Wordpress site
===

I want to build a mobile website for an already existing Wordpress site. I prefer to redirect the users to the mobile site automatically if the user is browsing from a mobile device. I will also need to change the contents of the pages regularly and may have to add more pages over time. But I do not want to create two different copies of the same page for desktop and mobile. 

Please suggest the best option to go forward with this situation. 

Thanks.