Update README.md for new socket server
Bug fix in server.js

- hostId was array instead of a string
- removed empty players; expression after {
Adding guidelines for the exam
Adding tasks for 2nd exam
Add mockup image to 2nd exam 2nd task
Removing extra whitespace in 2nd task's server
Removing more whitespace
Adding link for HTML5 color input
Merge remote-tracking branch 'upstream/master'