set better default materials
Restore texture api
Make `demo` the root directory for `npm start`.

URLs in the script/HTML don't resolve properly when running
from `localhost:8080/demo`.
Fixed issue with changing block back to grass (inner array)
Merge pull request #9 from MRdNk/block_selection_fix

Block selection fix
Merge pull request #7 from hughsk/fix/npm-start

Make `demo` the root directory for `npm start`.
Merge pull request #6 from shama/textureapi

Restore texture api: loadTextures and applyTextures
0.3.0 - restore texture loading api
homage to the creators
Merge pull request #11 from shama/maxstack

homage to the creators
use collide-3d-tilemap for player->terrain collisions
Merge pull request #12 from chrisdickinson/master

Use `collide-3d-tilemap` for collisions
mess with collision velocity
merge
demo