Added bracket for grid and mocos to the Readme.md

Readme.md

@@ -19,6 +19,11 @@ Our example grid:
 ![Our example grid](our_grid.jpg)
 
 
+To registrate the point cloud with the virtual world (so that the point cloud and the hmd fits), it is also recommended to build a bracket that keeps the motion controller and grid at a fixed distance from each other during the registration process. For example, we use this:
+![Our example grid](fixation1.jpg)
+![Our example grid](fixation2.jpg)
+
+
 ## DEPENDENCIES
 ### The plugin
 To run the project, **PCL 1.9.1** and **Boost 1.6.8** are required. We already included the Libraries in the Unreal Project (see /VRKinectReg/Plugins/VRKinectRegistration/ThirdParty/) to overcome barriers and build PCL and boost statically, but due to space reasons, we uploaded the libs separately [here](https://seafile.zfn.uni-bremen.de/f/f219716657d24e62965f/) (the lib-folders in those both folders has to be copied into the **PCL_1_9_1**-folder and the **Boost**-folder.