How to create a web app in elementary os

Question

simply create a .desktop file and put in

/usr/local/share/applications

or

home/USERNAME/usr/local/share/applications

For example, using midori:

#!/usr/bin/env xdg-open
[Desktop Entry]
Name=NAME OF WEB-APP
Exec=midori -- 
app=http://ADDRESS OF WEB-APP
Terminal=false
Icon=PATH TO ICON
Type=Application
Categories=Network;WebBrowser;

To use other web browser, simply replace the executable name. Is that right?