update docs

change building

arch/netctl-gui.install

@@ -0,0 +1,12 @@
+post_install() {
+  xdg-icon-resource forceupdate --theme hicolor 2> /dev/null
+  update-desktop-database -q
+}
+
+post_upgrade() {
+  post_install "$1"
+}
+
+post_remove() {
+  post_install "$1"
+}