Add missing OpenFOAM disclaimers

Author: MakisH

multiple-perpendicular-flaps/README.md

@@ -112,3 +112,5 @@ After the simulation has finished, you can visualize your results using e.g. Par
 ## References
 
 [1] H. Bungartz, F. Linder, M. Mehl, B. Uekerman. A plug-and-play coupling approach for parallel multi-field simulations. 2014.
+
+{% include disclaimer.html content="This offering is not approved or endorsed by OpenCFD Limited, producer and distributor of the OpenFOAM software via www.openfoam.com, and owner of the OPENFOAM®  and OpenCFD®  trade marks." %}

perpendicular-flap/README.md

@@ -71,3 +71,5 @@ Reasons for the differences:
 
 * The CalculiX adapter only supports linear finite elements (deal.II uses 4th order, FEniCS 2nd order).
 * SU2 models a compressible fluid, OpenFOAM and Nutils an incompressible one.  
+
+{% include disclaimer.html content="This offering is not approved or endorsed by OpenCFD Limited, producer and distributor of the OpenFOAM software via www.openfoam.com, and owner of the OPENFOAM®  and OpenCFD®  trade marks." %}

quickstart/README.md

@@ -110,6 +110,8 @@ You may be curious what displacements OpenFOAM received from the rigid body solv
 
 ![result](images/quickstart-result.png)
 
+{% include disclaimer.html content="This offering is not approved or endorsed by OpenCFD Limited, producer and distributor of the OpenFOAM software via www.openfoam.com, and owner of the OPENFOAM®  and OpenCFD®  trade marks." %}
+
 ## What's next?
 
 To become a preCICE pro: