Update gitignore

Author: jmcvey3

.gitignore

@@ -35,6 +35,8 @@ $ cat .gitignore
 # Exemptions
 !**/examples/data/wave/*.mat
 !**/tests/data/wave/*.mat
+!**/examples/data/dolfyn/test_data/*.dolfyn.log
 
 # Files created during tests
 mhkit/tests/wave/plots/
+**/examples/data/dolfyn/test_data/test_save.nc