message: README: adds an interesting new article to the reference list
diff: @@ -183,3 +183,4 @@ brew install freetype fontconfig glew glfw3 glm harfbuzz boost
  * [xterm](https://invisible-island.net/xterm/ctlseqs/ctlseqs.html): xterm control sequences
  * [console\_codes](http://man.he.net/man4/console_codes) Linux console codes
  * [Summary of ANSI standards for ASCII terminals](http://www.inwap.com/pdp10/ansicode.txt)
  +* [Text Terminal HOWTO (Chapter 7.2, PTY)](http://tldp.org/HOWTO/Text-Terminal-HOWTO-7.html#ss7.2)
  