Add game logic and websocket implementation
Add sample client code
Support rov and rotation
Implement FOV and visible/invisible state
Add participant indicator
Add keyboard help
Add role
Enable to use space key for rotation
modularize (client side)
Modify sample
Improve sample (add notify message)
Add random initial position and movable area
Add joined and leaved event
Update sample
add test.txt
add event.ejs for event page view
create event page
Change file codec to UTF-8
merged source in app.js

http://localhost:3000/          -> go to login page
http://localhost:3000/events/1  -> go to event page
Add score and time