def new
      @achievement = Achievement.new

      respond_to do |format|
        format.html # new.html.erb
        format.xml  { render :xml => @achievement }
      end
    end
def new
      @achievement = Achievement.new

      respond_to do |format|
        format.html # new.html.erb
        format.xml  { render :xml => @achievement }
      end
    end
GET /achievements/new
 GET /achievements/new.xml