add express module and use jade

Signed-off-by: Lee <jessy1092@gmail.com>
delete index.html
fix server using express and socket.io

Signed-off-by: Lee <jessy1092@gmail.com>
using jquery to add text

Signed-off-by: Lee <jessy1092@gmail.com>
using jQuery and fix bug

Signed-off-by: Lee <jessy1092@gmail.com>