add description file

Jeremie Dimino · Jeremie Dimino · commit 90458741451c · 2017-05-26T15:34:28.000+01:00
diff --git a/utop.descr b/utop.descr
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+Universal toplevel for OCaml
+utop is an improved toplevel for OCaml. It can run in a terminal or in
+Emacs. It supports line edition, history, real-time and context
+sensitive completion, colors, and more.
+
+It integrates with the tuareg mode in Emacs.
