fix #18: inverse the coding and shebang line

examples/worlds/follow_moving_body.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
 """Follow a body with the main camera in the world.
 
 Try to move the sphere with the mouse (left-click on the object).

examples/worlds/load_robot.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
 """load a robot in a basic world and distribute randomly few objects on the floor.
 
 Load a basic world (i.e. with a floor and gravity enabled), and load a robot inside of it, and distributed randomly

examples/worlds/load_world.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
 """Load a basic world with different objects in it
 
 Load a basic world (i.e. with a floor and gravity enabled) with different objects (only visual, and with collision

examples/worlds/move_camera.py

@@ -1,5 +1,5 @@
-# -*- coding: utf-8 -*-
 #!/usr/bin/env python
+# -*- coding: utf-8 -*-
 """Move main camera in the world.
 
 Move the main camera in the world using the keyboard: