Upvote this feature on Dropbox

I know this is now a correct place to do, but kindly upvote the request on dropbox forum so dropbox may enable this type of feature in future releases. 

https://www.dropboxforum.com/t5/Dropbox/Any-file-like-gitignore-to-ignore-file-to-sync-for-Dropbox/idi-p/314108#M51487