use raw WebRTC Data Channels instead of PeerJS
update CONTRIBUTING.md
remove docs/ (will come later)
add PeerJS boilerplate code to use WebRTC data channels (issue #10)
Merge pull request #12 from cvan/rtc

add PeerJS boilerplate code to use WebRTC data channels (issue #10)
establish a successful connection between host and client
fix filenames of minified JS bundles; remove old bundles
remove settings_local.js (keep locally)
move JS bundles to src/js/ (so relative paths are easier)
add styles for NES-inspired gamepad
rename `settings.PEER_KEY` to `settings.PEERJS_KEY`
in client do `i++` instead of `i += 1`
add letter-spacing for Mozilla logo in NES-inspired gamepad
send click+touch+keyboard events from NES gamepad to game
Merge pull request #28 from cvan/presses

send click+touch+keyboard events from NES gamepad to game