use_settings_pkl in docstring

Author: kkiesling

openmc_plotter/plotmodel.py

@@ -63,6 +63,11 @@
 class PlotModel():
     """ Geometry and plot settings for OpenMC Plot Explorer model
 
+        Parameters
+        ----------
+        use_settings_pkl : bool
+            If True, use plot_settings.pkl file to reload settings
+
         Attributes
         ----------
         geom : openmc.Geometry instance