[#156] Add missing mp3; rename Images folder
Update 04 Fruit Machine.md

Fixed an incorrectly marked down green block when explaining how to use
the 'and' operator.
Clarified from where the sprite should be added.
Corrected number of steps taken by parrot when boosting.
Merge branch 'IanDominey-master'
Merge pull request #159 from andylolz/156-missing-mp3

[#156] Add missing mp3; rename Images folder