Update README.md - Yvonne affiliation.

README.md

@@ -54,7 +54,7 @@ Contact your MS tutor! If MS tutor is not around contact some other MS tutor.
 |Crielaard, S. (Stefan)     |       Velema/Huck      |
 |Jona Merx                  |       Boltje/Rutjes    |
 |Meeusen, E. (Evy)          |       Boltje/Rutjes    |
-|Yvonne Bartels             |       RuUMC??          |
+|Yvonne Bartels             |       Boger/RuUMC?     |
 |Bruekers, J.P.J. (Jeroen)  |       Nolte            |
 
 Your group not in a list? **Become a MS tutor yourself!** (PhD preferred)