Modified README

README.md

@@ -25,6 +25,7 @@ sensBVP -a <absolute tolerance>
 	-c <mole fraction composition> 
 	-t <integration time> 
 	-s <enable sensitivity analysis>
+	-n <disable solution of BVP>
 ```
 
 Execute sensBVP -h for all available options. The time evolution of