Update the preCICE version to 2.0

Author: micheltakken

README.md

@@ -2,7 +2,7 @@
 
 This adapter was implemented as part of the [master thesis of Lucia Cheung](https://www5.in.tum.de/pub/Cheung2016_Thesis.pdf) in cooperation with [SimScale](https://www.simscale.com/). Currently only conjugate heat transfer is supported.
 
-The adapter currently supports preCICE v1.4.1 and Code_Aster v14.4. The following tutorials are available.
+The adapter currently supports preCICE v2.0 and Code_Aster v14.4. The following tutorials are available.
 
 * Flow over plate OpenFoam-Code_Aster ([wiki](https://github.com/precice/code_aster-adapter/wiki/Flow-over-plate-Code_Aster-Tutorial))