Victor Engine Scripts and Readme Update

Added four scripts originally created by Victor Sant in order to enable
more accurate collisions (Pixel Movement), jumping (Free Jump) and
moving platforms (Moving Platforms). The scripts themselves now work and
just need proper usage within the game. There are similar elements
between Moving Platforms and the rolling boulder script I wish to
create, so I will see if I can reference this in order to create the new
script once I'm done implementing features from these scripts.

Note that jumping does not affect followers. Readme has also been
updated to reflect the new content.