This WordPress Plugin adds two pinterest shortcode buttons (one for pins and another one for boards) to the visual editor. Click here to download it!
 

A screenshot of the Visual Editor with the buttons

 

Example of pin shortcode

(use the folowing shortcode, without the gaps in [])

 [ pinterest ]https://www.pinterest.com/pin/537265430523513109/[ /pinterest ]

 

 

Example of responsive board shortcode

(use the folowing shortcode, without the gaps in [])

[ pinboard_src="https://www.pinterest.com/lefkadarooms/beaches-in-lefkada/" scaleheight="600" scalewidth="150" ]