Thanks for your interest in Intel Edison platform.
I found these examples (using servo motors) and documentation about SparkFun PWM shield that could be helpful. Here is the link https://github.com/sparkfun/SparkFun_PWM_Block_for_Edison_CPP_Library.
Additionally, in the Arduino IDE: File>Examples>Servo, you can find two examples to control servo motors that could be modified in order to control 2 or more servos. Also, in this link http://www.robotoid.com/appnotes/arduino-operating-two-servos.html, you can check the servo test sketch to know how they control two servos.
If you prefer using Python instead of Arduino IDE. You can check this servo library here: https://github.com/MakersTeam/Edison/tree/master/Python-Examples/Servo.
Hope this information helps, please if you have any questions, don’t hesitate to ask.