Go to inVision and open up any design that you would like to embed. Click the "Share" button and choose the "Public" tab. Click the "Copy" button to copy the shareable URL.
Open a page, record or a post in AllAnswered. Paste the copied URL on a blank line and hit enter key. You will see the inVision design magically appears.
Alternatively, you can also use the Media menu of the editor to embed the design.