How to make a joomla website live on it's domain itself ?

[avvllvva]

I have a website say www.demo.com.

 

And I created a new joomla version for it and that is located in www.demo.com/beta (beta-is one folder in root directory it contains new joomla website).

 

Now I need to transfer this joomla site into main domain ( ie; transfer all joomla files from 'beta-folder' to root directory).

 

So that I can make the website live on its domain itself (ie; www.demo.com instead of www.demo.com/beta).

 

Which is the easiest and better way to do this. Plase advice.

 

Thanks.