    def compile_erb(erb_file, dst_file=nil)
      new_file_path = dst_file || erb_file.gsub(/\.erb$/,'')
      @logger.debug "Compiling erb #{erb_file} to #{new_file_path}"

      File.open(new_file_path, "w"){|f|
        f.write(ERB.new(File.read(File.expand_path(erb_file))).result(binding))
      }
    end