added new background
added  game hud
added hud
Revert "added hud"

This reverts commit b562af2bbeed7a882e00e7494063304d04cf7c9f.
changed UI
added some sprite sheets
added server side code
Multiplayer Version!
multiplayer version
updated animation for robot
supported 8 direction move, changed game render behavior
added simple ai
fixed some ai bugs
fixed some connection bug
changed UI Init
now system will load character info from js file
system will load magic schema from js file
added a game creation page
changed game creation process

1.game can display user’s name now
2.users can enter gameID to join other games
added a 404 page when game not found