update README

hw4/skeleton/p1_p2/README

@@ -28,6 +28,11 @@ export OMP_NUM_THREADS=4
 
 You may want to set the OMP_NUM_THREADS variables to different values.
 
+If interested feel free to use input arguments and study the behaviour of the system for different inputs, e.g.
+./ssa -omega 1 -samples 5000
+Lower quantities usually increase the stochastic effects and require more simulations/samples.
+
+
 WHAT TO MODIFY
 --------------
 You only need to change the indicated sections in