Tiddlywiki logout button for the nodejs server

[Guille Rmo]

Hi all. I am new with tiddlywiki and I am very interested on hacking it. I just deployed it in my personal server and since I didn't see a logout button, I had to make one :) 

I made a tutorial for this and posted it in steemit: https://busy.org/utopian-io/@elguille/adding-a-logout-button-to-tiddlywiki