Unity 2D Character Controller: Double Jumping

In this tutorial we are extending the 2D character controller to allow for double jumping. This is a continuation of setting up a 2D platformer sci-fi game in Unity3D. At the time of this video I am using Unity3D version 5.3.5f1 https://unity3d.com/ -~-~~-~~~-~~-~- Check out: "Multipurpose Message Log Unity3D 2017: Part 1" https://www.youtube.com/watch?v=t6spzvSzNrQ -~-~~-~~~-~~-~-