def template(name, datas)
      file = template_path(name)
      content = File.read(file)

      datas.each do |k, v|
        k = "<%= #{k} %>"
        content = content.gsub(k, v)
      end
      return content
    end
def template(name, datas)
      file = template_path(name)
      content = File.read(file)

      datas.each do |k, v|
        k = "<%= #{k} %>"
        content = content.gsub(k, v)
      end
      return content
    end
Replace the placeholders by the variables

 name: template name
 datas: hash containing the values

 Returns string