Warner Bros. has acquired the James Patterson bestsellers “When the Wind Blows” and “Maximum Ride” with an eye toward turning the young adult books into a kid franchise. Matthew Huffman has been set to write the script and Weed Road’s Akiva Goldsman and Kerry Foster will produce. Patterson, best known for writing the Alex Cross mystery novels that were turned into “Kiss the Girls” and “Along Came a Spider,” has turned his storytelling to the half-pint set. Series began with “When the Wind Blows,” the story of six genetically engineered kids – they have wings and can fly – who are hunted down by the scientists. The sequel book, “Maximum Ride,” has topped the New York Times children’s bestseller list since it was published in April.