Remove previous walls when new walls are created

modified:   ld38.js

Changed player starting position

modified:   ld38.js

Added screenshot for LD38

new file:   reduction_shot1.png

Initial commit

First version to be submitted for LD38.

new file:   gem.png
new file:   gem.svg
new file:   gem_active.png
new file:   gem_active.svg
new file:   index.html
new file:   ld38.html
new file:   ld38.js
new file:   player.png
new file:   player.svg
new file:   wall.png