Merge branch 'develop' into feature/websockets
socket.io proof of concept
joined users list auto-update
resolved #6: as a user I want to see users as soon as they join in
Merge branch 'develop' into feature/websockets
extracted push notification about joined user into a dedicated routine
fixed jshint warning
Merge pull request #7 from jpoker/feature/websockets

#6 as a user I want to see other users as soon as they join in