prepping for pathfinding for character movement animation

added BFS and adjacentTile finding methods to MapInfo.cs
created tile highlight script

with various highlight prefabs
BFS method working with basic tile highlighting
commit b4 testing FoV algorithms
added vision documentation
added simple FoV algorithm to vision documentation
Merge branch 'animation-testing'
created testscan file to work on FoV alg on laptop
Merge pull request #1 from soggychips/vision-testing

Vision testing