Ember Addon that adds a post build step which runs final output css files through rtlcss.
This is a work in progress - at this point it simply runs the default rtlcss.process() function on the app.css and vendor.css files and dumps out app.rtl.css and vendor.rtl.css.
Your application will need to detect when it needs rtl css included and swap out the css files. In our case this is happening on the server.
ember install ember-cli-rtlcss
After that, every time you do a build, the .rtl.css files will be generated.