Merge pull request #47 from bethjohnson/master

(refactor) D3 into custom angular directive. Closes #13
(test) Add basic scaffolting for test
Merge pull request #48 from christophertrev/test/basic
(bug)use router so user can do post request
Merge pull request #50 from azai91/(bug)server

(bug)use router so user can do post request
(bug)posts uses socket
Merge pull request #51 from azai91/(bug)server

(bug)posts uses socket
(test) Add mocha tests
Merge pull request #53 from christophertrev/test/mocha
(refactor)  Remove unnecessary authentication files.  Remove student login functionality.  Major architecture refactoring.  Closes #45
Merge pull request #54 from noodle/master

(refactor)  Remove unnecessary authentication files.  Remove student login functionality
(feat) Adds confusion per second to teacher view. Closes #10