embed a single tweet in an article
just copy / paste the tweet url in the editor and the wordpress will do the rest
it will look like this:
I've figured out why old men wear black socks with tennis shoes. It's because they don't care what you think.
— Matt Cutts (@mattcutts) November 30, 2014
embed a twitter timeline in an article
go to the profile and locate the settings icon (more user actions) and click on the “Embed this Profile” option – like this:
on this new page you can make a few changes if you want to and click on the Create widget button
copy/paste the code in the wordpress editor – use the text tab. it should look like this: