adding dependency command for arch

README.md

@@ -116,6 +116,36 @@ sudo apt install \
   libxkbregistry-dev
 ```
 
+On Arch, you can use this command:
+
+```
+pacman -S \
+  gtkmm3 \
+  jsoncpp \
+  libsigc++ \
+  fmt \
+  wayland \
+  chrono-date \
+  spdlog \
+  gtk3 \
+  gobject-introspection \
+  libgirepository \
+  libpulse \
+  libnl \
+  libappindicator-gtk3 \
+  libdbusmenu-gtk3 \
+  libmpdclient \
+  sndio \
+  libevdev \
+  libxkbcommon \
+  upower \
+  meson \
+  cmake \
+  scdoc \
+  wayland-protocols \
+  glib2-devel
+```
+
 
 Contributions welcome!<br>
 Have fun :)<br>