Update README.org

Add description of unicode display issue

Author: mtreca

README.org

@@ -194,3 +194,7 @@ running gnuplot process will make Emacs appear to freeze. (It isn't
 really crashed: typing =C-g= will unlock it and let you continue). The
 workaround for now is to make Gnuplot output a string before pausing,
 by doing =pause -1 "Hit return"= or similar.
+
+** Issue with Unicode Character Display
+
+Some users have reported [[https://github.com/emacs-gnuplot/gnuplot/issues/39][issues when trying to display unicode characters]]. This issue is likely due to your distribution bundling gnuplot with [[https://unix.stackexchange.com/questions/496206/unicode-in-gnuplot-terminal/496245#496245][editline instead of readline]]. Recompiling the source with support for unicode should fix the issue until this issue is fixed upstream. Thanks to [[https://github.com/rolandog][rolandog]] for discovering this fix.