According to point 3 under the twitter display requirements
"No other social or 3rd party actions SIMILAR to Follow, Reply, Retweet and Favorite may be attached to a Tweet."
I’m assuming that a thumbs up or thumbs down is dissimilar enough to be allowed in this case (NOTE-the number of people who like or dislike a tweet will not be shown). Also the image(s) will be placed outside the tweet box (but adjacent to it).