Update mujoco_viewer.py

Author: rohit-kumar-j

mujoco_viewer/mujoco_viewer.py

@@ -23,7 +23,7 @@ def __init__(self, model, data):
         self._transparent = False
         self._contacts = False
         self._joints = False
-        self._shadows = False
+        self._shadows = True
         self._wire_frame = False
         self._convex_hull_rendering = False
         self._inertias = False