Updating hosted version of the demo.
Merge https://github.com/googledrive/realtime-tasks
Revert "Updating hosted version of the demo."

This reverts commit a6bf3b66db5d92bdec74fd7bc3a6d52a03b932e5.
Updating build files and dependencies to fix problems. Removing coffee and tests, since they weren't being used.
Merge pull request #14 from erickoledadevrel/master

Updating build files and dependencies to fix problems.