Added "findTiles.lua" - function to find event tiles
Added "screenWidth" and "screenHeight" to "level.lua"
Added "findTiles()" function to "love.load()"

Removed "for" loop from "love.load()" (moved to "findTiles()")

Updated "t_map01" for testing "start" tile
Updated "player.lua" to grab player initial position from "start" tile