Merge pull request #4 from qsymmachus/readme

Adds MVP to readme
Adds migrations & models for surveys, questions, and choices
Merge branch 'master' of https://github.com/qsymmachus/team-spanish-inquisition into surveys-questions-choices-models
Merge pull request #6 from qsymmachus/users

Add Users
Merge pull request #7 from qsymmachus/surveys-questions-choices-models

Surveys questions choices models
Add unit tests for user model