  * Download YUI package from http://developer.yahoo.com/yui/download/
   
  * Unzip YUI package and move content of subdirectory "yui/build" from package into "web/sfYUIPlugin/js/yui", f.ex:
  
  {{{
    mkdir -p [project_dir]web/sfYUIPlugin/js/yui
    cp -a yui/build/* [project_dir]web/sfYUIPlugin/js/yui
  }}} 
   
  * If you want to use yui-ext (BSD licence is probably up to 0.33) checkout it from: http://svn.symfony-project.com/plugins/sfYUIPlugin/web/js/yui-ext.0.33 (revision 3472) into "web/sfYUIPlugin/js/yui-ext.0.33"
  
  {{{
    svn co -r3472 http://svn.symfony-project.com/plugins/sfYUIPlugin/web/js/yui-ext.0.33 ./web/sfYUIPlugin/js/yui-ext.0.33
  }}}
