This is my solution to Puzzle Node Problem #11 -- "Hitting Rock Bottom"
RELEVANT FILES:
refactored_midterm.rb -- The most up-to-date (and working!) version of my code.
complex_output.txt -- What my code generates as output (the "solution")
11-hitting-rock-bottom.md -- The original problem, from PuzzleNode
simple_cave.txt -- Testing file.
simple_out.txt -- What they expect the output to look like.
complex_cave.txt -- the actual input to be used.