Update README.md

Technical charter added

Signed-off-by: Sander Jansen <[email protected]>

Author: Sander3003

README.md

@@ -6,6 +6,9 @@ This repository contains information on how to contribute, allows to share CoMPA
 
 CoMPAS presentations can be added to the presentations for re-use.
 
+## CoMPAS technical charter
+
+The docs contain the [LF energy CoMPAS technical charter] (https://github.com/com-pas/contributing/blob/Update-repository/docs/blob-files/CoMPAS_Technical_Charter_2020-06-07.pdf)
 ## Contributing
 
 The contributing guide is hosted in this repository and can be found here: [Contribution to CoMPAS](https://com-pas.github.io/contributing/).