changing a caret to tilde for jwt-express version (trying to fix a travis error).
Changing a caret to tilde for jsonwebtoken.
Changing a caret to tilde for grunt-contrib-compass.
Adding sass, compass, and npm installs to the travis script to fix build errors.
Merge pull request #2 from DavidEBest/user-auth

Adding the user auth changes to a branch. These are still a work in progress.
Merging user-auth into initialtests.