Instruct users to make the plugin executable

Author: TheAssassin

README.md

@@ -18,6 +18,8 @@ This plugin requires the following dependencies in order to work properly:
 # get linuxdeploy and linuxdeploy-plugin-gtk
 > wget -c "https://raw.githubusercontent.com/linuxdeploy/linuxdeploy-plugin-gtk/master/linuxdeploy-plugin-gtk.sh"
 > wget -c "https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage"
+# make them executable so that we can call them (and also, plugins called from linuxdeploy are called like binaries)
+> chmod +x linuxdeploy-x86_64.AppImage linuxdeploy-plugin-gtk.sh
 
 # get list of variables
 > ./linuxdeploy-plugin-gtk.sh --help