Update README.md, added link to Ryoichi's example

README.md

@@ -87,6 +87,8 @@ loss_den_from_ptrn=ptrn.loss_den(file_name_dt,dtl_dt=5e-6)
 
 ```
 
+There is another larger example of how you may modify the lattice in the examples folder, see [manipulate_lattice.py](examples/manipulate_lattice/manipulate_lattice.py).
+
 ### Library
 
 To be done..