Updated README

README.md

@@ -21,8 +21,25 @@ technologies used on websites.  It detects
 * Add a 16x16 PNG image to `share/images/icons` matching the application name 
   (use [Smush.it](http://www.smushit.com) or 
 	[OptiPNG](http://optipng.sourceforge.net) for compression).
-* Specify one or more categories and provide the URL to the application's 
-  website when submitting a pull request.
+* Provide the URL to the application's website when submitting a pull request.
+
+
+### Adding a new category
+
+Please open an issue to discuss first. Adding a category involves updating `apps.json`,
+preference pages, locales and [wappalyzer.com](http://wappalyzer.com).
+
+
+### Adding a new translation
+
+#### Mozilla Firefox
+
+Copy `drivers/firefox/locale/en-US`.
+
+
+#### Google Chrome
+
+Copy `drivers/chrome/_locales/en`.
 
 
 ## apps.json