Amending incorrect feature descriptions in main README

Author: Finn Sinclair

README.md

@@ -56,7 +56,7 @@ MRTK-Unity is a Microsoft-driven project that provides a set of components and f
 |  [![Progress Indicator](Documentation/Images/ProgressIndicator/MRTK_ProgressIndicator_Main.png)](Documentation/README_ProgressIndicator.md) [Progress Indicator](Documentation/README_ProgressIndicator.md) | [![Dialog](Documentation/Images/Dialog/MRTK_UX_Dialog_Main.png)](Assets/MRTK/SDK/Experimental/Dialog/README_Dialog.md) [Dialog [Experimental]](Assets/MRTK/SDK/Experimental/Dialog/README_Dialog.md) | [![Hand Coach](Documentation/Images/HandCoach/MRTK_UX_HandCoach_Main.jpg)](Assets/MRTK/SDK/Experimental/HandCoach/README_HandCoach.md) [Hand Coach [Experimental]](Assets/MRTK/SDK/Experimental/HandCoach/README_HandCoach.md) |
 | Visual indicator for communicating data process or operation | UI for asking for user's confirmation or acknowledgement  | Component that helps guide the user when the gesture has not been taught |
 |  [![Hand Physics Service](Documentation/Images/HandPhysics/MRTK_UX_HandPhysics_Main.jpg)](Assets/MRTK/Extensions/HandPhysicsService/README.md) [Hand Physics Service [Experimental]](Assets/MRTK/Extensions/HandPhysicsService/README.md) | [![Scrolling Collection](Documentation/Images/ScrollingCollection/MRTK_UX_ScrollingCollection_Main.jpg)](Assets/MRTK/SDK/Experimental/ScrollingObjectCollection/README.md) [Scrolling Collection [Experimental]](Assets/MRTK/SDK/Experimental/ScrollingObjectCollection/README.md) | [![Dock](Documentation/Images/Dock/MRTK_UX_Dock_Main.png)](Assets/MRTK/SDK/Experimental/Dock/README_Dock.md) [Dock [Experimental]](Assets/MRTK/SDK/Experimental/Dock/README_Dock.md) |
-| Visual indicator for communicating data process or operation | UI for asking for user's confirmation or acknowledgement  | Component that helps guide the user when the gesture has not been taught |
+| The hand physics service enables rigid body collision events and interactions with articulated hands. | An Object Collection that natively scrolls 3D objects. | The Dock allows objects to be moved in and out of predetermined positions. |
 |  [![Eye Tracking: Target Selection](Documentation/Images/EyeTracking/mrtk_et_targetselect.png)](Documentation/EyeTracking/EyeTracking_TargetSelection.md) [Eye Tracking: Target Selection](Documentation/EyeTracking/EyeTracking_TargetSelection.md) | [![Eye Tracking: Navigation](Documentation/Images/EyeTracking/mrtk_et_navigation.png)](Documentation/EyeTracking/EyeTracking_Navigation.md) [Eye Tracking: Navigation](Documentation/EyeTracking/EyeTracking_Navigation.md) | [![Eye Tracking: Heat Map](Documentation/Images/EyeTracking/mrtk_et_heatmaps.png)](Documentation/EyeTracking/EyeTracking_ExamplesOverview.md#visualization-of-visual-attention) [Eye Tracking: Heat Map](Documentation/EyeTracking/EyeTracking_ExamplesOverview.md#visualization-of-visual-attention) |
 | Combine eyes, voice and hand input to quickly and effortlessly select holograms across your scene | Learn how to auto-scroll text or fluently zoom into focused content based on what you are looking at | Examples for logging, loading and visualizing what users have been looking at in your app |