This is a simple overview of how the RYL theme would look like, we have taken care all the elements that are built on to webarch and even 3rd party plugins
To setup you use the following two options
Option One
The old fashion CSS method, simply replace your core style sheet link with this one
assets/css/rtl/style.css
assets/css/rtl/responsive.css
Option Two
Using LESS, simply open up module.less and responsive.less file and change the following varriable, but dont forget to compile it too
@direction:"rtl";