firefox hello as alternative to skype?

[Anton Shterenlikht]

I'm having no luck getting any of the skype ports to work.
In the meantime I found that Firefox Hello is advertised
as an alternative:
https://www.mozilla.org/en-US/firefox/hello/

I still cannot find the "Firefox Hello Button" on my firefox-40.0_4,1.
Has anybody used Firefox Hello?

Thanks

Anton