[gedit-plugins] readme: rework it + Markdown format

[Sébastien Wilmet <swilmet src gnome org>]

commit 0d608f16b9093d869c83b4aace957e1e651eb79d
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Sep 11 09:55:14 2019 +0200

    readme: rework it + Markdown format
    
    For the installation it's better to install into a separate prefix, as
    the gedit docs explain.

 README    | 14 --------------
 README.md | 11 +++++++++++
 2 files changed, 11 insertions(+), 14 deletions(-)
---
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1e73fbd
--- /dev/null
+++ b/README.md
@@ -0,0 +1,11 @@
+gedit-plugins
+=============
+
+This is version 3.34.0 of gedit-plugins.
+
+gedit-plugins is a set of additional plugins for the
+[gedit](https://wiki.gnome.org/Apps/Gedit) text editor.
+
+See the
+[gedit README.md](https://gitlab.gnome.org/GNOME/gedit/blob/master/README.md)
+file for more information (installation, how to contribute, etc).