       sent as download. It is automatically inferred from the
       filename extension
     * `:charset` - the charset of the file, such as "utf-8".
-      Defaults to none.
-    * `:offset` - the bytes to offset when reading. Defualts to `0`.
-    * `:length` - the total bytes to read. Defaults to `:all`.
+      Defaults to none
+    * `:offset` - the bytes to offset when reading. Defualts to `0`
+    * `:length` - the total bytes to read. Defaults to `:all`
 
   ## Examples
 

      iex> layout_formats(conn)
      ["html", "mobile"]

  Raises `Plug.Conn.AlreadySentError` if the conn was already sent.
  """
  @spec put_layout_formats(Plug.Conn.t, [String.t]) :: Plug.Conn.t
  def put_layout_formats(%Plug.Conn{state: state} = conn, formats)

  end

  @doc """
  Returns a message from flash by `key`.

  ## Examples

