[mnarayan01]

> I shouldn't need Python and an SDK installed to develop a JavaScript browser extension.

You don't. The only things you need are a text editor and a zip utility (and I'm not sure about the last; it's certainly not needed if you're not distributing the extension). You only need the SDK if you want to use the Add-on SDK.

[lern_too_spel]

Then it's a problem with the documentation (https://blog.mozilla.org/addons/2014/06/05/how-to-develop-fi...), which is a little easier to fix.