[pygobject] Add Nicotine+ to "Who Is Using PyGObject?"

[Sam Thursfield <sthursfield src gnome org>]

commit b60e4030846ee85835c16dcbd1899f2155d90587
Author: Mat <mail mathias is>
Date:   Wed Oct 14 16:16:56 2020 +0000

    Add Nicotine+ to "Who Is Using PyGObject?"

 docs/index.rst | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/docs/index.rst b/docs/index.rst
index 7646390d..bc599907 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -77,6 +77,7 @@ Who Is Using PyGObject?
 * `Lollypop <https://wiki.gnome.org/Apps/Lollypop>`__ - a modern music player
 * `Meld <http://meldmerge.org/>`__ - a visual diff and merge tool
 * `MyPaint <http://mypaint.org/>`__ - a nimble, distraction-free, and easy tool for digital painters
+* `Nicotine+ <https://nicotine-plus.org/>`__ - a graphical client for the Soulseek file sharing network
 * `Orca <https://wiki.gnome.org/Projects/Orca>`__ - a flexible and extensible screen reader
 * `Pithos <https://pithos.github.io/>`__ - a Pandora Radio client
 * `Pitivi <http://www.pitivi.org/>`__ - a free and open source video editor