Summer vacation is about to start and despite the load of holiday homework, kids love this time of the year as they get to enjoy two fun-filled months. As for the entertainment industry, it is the best time to come up with big-budget, 3D and animation movies for children. This year, too, quite a few movies of these genres have either hit the movie theatres or are about to be released. Business Insider has come up with a list of 15 recent and upcoming