Default overlay=True for WMS

Author: ocefpaf

folium/features.py

@@ -18,7 +18,7 @@
 class WmsTileLayer(TileLayer):
     def __init__(self, url, name=None,
                  format=None, layers=None, transparent=True,
-                 attr=None):
+                 attr=None, overlay=True):
         """
         TODO docstring here
 
@@ -29,6 +29,7 @@ def __init__(self, url, name=None,
         self.url = url
         self.format = format
         self.layers = layers
+        self.overlay = overlay
         self.transparent = transparent
         self.attr = attr
 
@@ -616,7 +617,7 @@ def __init__(self, locations, color=None, weight=None,
 
 
 class ImageOverlay(MacroElement):
-    def __init__(self, image, bounds, opacity=1., attr=None,
+    def __init__(self, image, bounds, opacity=1., attribution=None,
                  origin='upper', colormap=None, mercator_project=False):
         """
         Used to load and display a single image over specific bounds of
@@ -661,7 +662,7 @@ def __init__(self, image, bounds, opacity=1., attr=None,
         self.bounds = json.loads(json.dumps(bounds))
         options = {
             'opacity': opacity,
-            'attribution': attr,
+            'attribution': attribution,
         }
         self.options = json.dumps({key: val for key, val
                                    in options.items() if val},