Update to 3.0.0-4

Add dependency on iproute2 as it was added upstream
Remove fix for systemd service file paths as upstream places them correctly
now
Nordvpnd has been split into two services
Print message after install informing users about what services to start

nordvpn-bin.install

@@ -0,0 +1,13 @@
+post_install() {
+  echo ':: In order to enable nordvpn you have to start two services:'
+  echo '     sudo systemctl enable --now nordvpnsd'
+  echo '     systemctl --user enable --now nordvpnud'
+}
+
+post_upgrade() {
+  if [ $(vercmp $2 3.0.0-4) -lt 0 ]; then
+    echo ':: In order to enable nordvpn you have to start two services:'
+    echo '     sudo systemctl enable --now nordvpnsd'
+    echo '     systemctl --user enable --now nordvpnud'
+  fi
+}