Demo Update

I made some changes to the current demo of Randy's Camera based on the players feedback.

• Added a celebration when completing a level with 3 stars.
• Added some tips to the Tutorial level.
• Now focus an element changes automatically your current mode to the mode assigned to the element.
• Now when using a gamepad the B button can be used to stop using the camera.
• Now the battery level is also displayed with a number.
• Fixed some small bugs.
• Small changes were made to some sprites.