Yes, he is sensitive to the Force.
It might indicate that a whole new generation of Jedi is out there. Among those three young children you saw talking, that boy was telling the legend of Luke Skywalker. After being told by that alien, he goes outside and moves the broom near to wall via the Force.
From Archieve.org Cache of this page [Warning: this article contains spoilers]
A New Generation is Born: The final scene of the movie shows boy retelling the legend of Luke Skywalker until he is yelled at to go work. He walks outside and very casually moves a broom an inch from the wall into his hand proving he is Force sensitive. We see him looking up at a ship shooting through the stars and we see him with the ring on his finger. A new generation of Jedi and rebels are out there and ready.