Added problem model and sending it back to client
importing sandbox from github
Merge branch 'sand' into dev
Merge pull request #28 from alexmckenley/dev

Correctly include sandbox from github
Fixed bug with sending problem to client
Added problem model and sending it back to client
Merge branch 'server' into dev

Conflicts:
	app/sockets.js
	test/populateChallenges.js
Merge pull request #29 from malucky/dev

Sending problem to clients when both players are ready
Merge pull request #30 from deini/dev

Preparing for watcher