[gnome-system-monitor: 1/3] Update README with required dependencies for build

[Robert Roth <robertroth src gnome org>]

commit fa0421cec86572e8bc8bf4ee15a26c2238c5c35e
Author: Wael Ramadan <wamramadan gmail com>
Date:   Mon Aug 9 01:38:09 2021 +0300

    Update README with required dependencies for build

 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/README.md b/README.md
index 54fdafb4..b2e90028 100644
--- a/README.md
+++ b/README.md
@@ -17,11 +17,11 @@ To build the application, the following dependencies are required:
 
 #### apt-get (Debian/Ubuntu/derivatives - deb-based package management)
 Use the following command to install dependencies:
-`sudo apt-get install meson gettext appstream-util itstool libglibmm-2.4-dev libgtkmm-3.0-dev libgtop2-dev 
librsvg2-dev libxml2-dev`
+`sudo apt-get install meson gettext appstream-util itstool libglibmm-2.4-dev libgtkmm-3.0-dev libgtop2-dev 
librsvg2-dev libxml2-dev libhandy-1-dev libsystemd-dev`
 
 #### dnf (Fedora/Centos/etc - rpm-based package management)
 Use the following command to install dependencies:
-`sudo dnf install meson gettext appstream itstool glibmm24-devel gtkmm30-devel libgtop2-devel librsvg2-devel 
libxml2-devel`
+`sudo dnf install meson gettext appstream itstool glibmm24-devel gtkmm30-devel libgtop2-devel librsvg2-devel 
libxml2-devel libhandy1-devel systemd-devel`
 
 #### Optional dependencies:
 - polkit - recommended