Today, the MRTK team released version 2017.2.1.4 of the Mixed Reality Toolkit - Unity.
This release contains bug fixes and a few new features, including the new Mixed Reality Toolkit Standard shader and motion controller haptics support within the Unity Editor.
For more information, please see https://github.com/Microsoft/MixedRealityToolkit-Unity/releases/tag/2017.2.1.4
Enjoy!