add webinar to top of page (#1264)
add webinar to top of page (#1264)

we are holding a webinar July 12 and would like to add description and registration link to the top of the page. Pretty sure I got everything right and certainly appreciate a review.

thank you.
nodejs/new.nodejs.org,yous/new.nodejs.org,phillipj/new.nodejs.org,nodejs/new.nodejs.org,yous/new.nodejs.org,phillipj/new.nodejs.org