let user know how to run lbry after install

packaging/ubuntu/postinst_append

@@ -0,0 +1,22 @@
+
+zenity --question --text="<span size=\"xx-large\">LBRY Installed</span>\n\nRun LBRY now?" --title="LBRY Installed" --ok-label=" Yes" \
+  --cancel-label=" No" --icon-name="system-software-install"
+
+case $? in
+  0) RUN=1 # yes
+  ;;
+  1) RUN=0 # no
+  ;;
+  *) RUN=0 # timeout or escape or whatever
+  ;;
+esac
+
+if [ $RUN = 1 ]; then
+  xdg-open "lbry://lbry"
+else
+  zenity --info --text="<span size=\"xx-large\">LBRY Installed</span>\n\nNo problem. You can run LBRY later by going to
+
+lbry://lbry
+
+in your browser." --title="LBRY Installed" --icon-name="system-software-install"
+fi

packaging/ubuntu/ubuntu_package_setup.sh

@@ -154,6 +154,8 @@ function addfile() {
 addfile "$PACKAGING_DIR/lbry" usr/share/python/lbrynet/bin/lbry
 addfile "$PACKAGING_DIR/lbry.desktop" usr/share/applications/lbry.desktop
 
+cat "$PACKAGING_DIR/postinst_append" >> control/postinst
+
 # repackage .deb
 $SUDO chown -R root:root control data
 tar -czf control.tar.gz -C control .