Zynga announced that the company has acquired NaturalMotion, developer of the Clumsy Ninja app, for $527 million in cash and equity. Zynga also announced it would lay off 314 employees, or 15 percent of its workforce. Though Clumsy Ninja was first introduced during the Sept. 2012 media event for the iPhone 5 and fifth-generation iPod touch, its release was delayed until Nov. 2013. The game has proven to be very popular despite the delay — Apple…