Update docs url in description to RTD?

[tony]

https://kaptan.readthedocs.org/en/latest/

What do you think of this @emre? We can set this up to update on commits.

[emre]

let's do it :+1:

[emre]

done. maybe we should strip documentation from the readme - since we have it in a separate place.

[tony]

@emre can you update the URL to https://kaptan.readthedocs.io?

do you have an RTD username? I'd like to add you to the readthedocs project so you can set up the webhook

[emre]

Updated.

my RTD handle is emrebey.

thanks.

[tony]

@emre added

can you login and try to set the webhook up?