Good solution for attaching wifi board. MJ duino ?

Dear Forum.
Is there any nice solution for attaching wifi chip to Arduino or Arduino clone ?
The solutions found this far includes voltage regulators in different version.

Came across this myself where I suspect it may be possible piggy back a esp8266 onto a arduino clone ?
Please see links below to images, dont know if mage url works so also attaching text links.

Any tips and ideas making it easy attaching wifi chip onto arduino board is highly appreciated.

Kind regards Peter.