Samples: Automatic updates to public repository

Remember to do the following:
    1. Ensure that modified/deleted/new files are correct
    2. Make this commit message relevant for the changes
    3. Force push
    4. Delete branch after PR is merged

If this commit is an update from one SDK version to another,
make sure to create a release tag for previous version.

README.md

@@ -1,6 +1,6 @@
 # MATLAB samples
 
-This repository contains matlab code samples for Zivid SDK v2.12.0. For
+This repository contains matlab code samples for Zivid SDK v2.13.1. For
 tested compatibility with earlier SDK versions, please check out
 [accompanying
 releases](https://github.com/zivid/zivid-matlab-samples/tree/master/../../releases).