Add simple README.rst

Signed-off-by: Corentin Noël <corentin.noel@collabora.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>

README.rst

@@ -0,0 +1,50 @@
+`Virglrenderer <https://virgil3d.github.io/>`_ - The VirGL virtual OpenGL renderer
+==================================================================================
+
+
+Source
+------
+
+This repository lives at https://gitlab.freedesktop.org/virgl/virglrenderer.
+Other repositories are likely forks, and code found there is not supported.
+
+
+Build & install
+---------------
+
+This project uses the meson build system:
+
+.. code-block:: sh
+
+  $ meson build
+  $ cd build
+  $ ninja install
+
+
+Support
+-------
+
+Many Virglrenderer devs hang on IRC; if you're not sure which channel is
+appropriate, you should ask your question on `OFTC's #virgil3d
+<irc://irc.oftc.net/virgil3d>`_, someone will redirect you if
+necessary.
+Remember that not everyone is in the same timezone as you, so it might
+take a while before someone qualified sees your question.
+
+The next best option is to ask your question in an email to the
+mailing lists: `virglrenderer-devel\@lists.freedesktop.org
+<https://lists.freedesktop.org/mailman/listinfo/virglrenderer-devel>`_
+
+
+Bug reports
+-----------
+
+If you think something isn't working properly, please file a bug report in
+`GitLab <https://gitlab.freedesktop.org/virgl/virglrenderer/-/issues>`_.
+
+
+Contributing
+------------
+
+Contributions are welcome, note that Virglrenderer uses GitLab for patches
+submission, review and discussions.