Merge pull request #2 from dyurkans/master

Added basic validations for all models. Wrote shoulda matchers for all of guardian and began shoulda matchers for student model.
Merge pull request #3 from dyurkans/master

Added additional shoulda matchers to bracket, registration, student, and user models
Removed unnecessary file
Added tests for physical date and t shirt size
Added tests for registration date
Corrected parameters for date and physical date in registration
Merge pull request #4 from s1anden/master

Added tests to registration
Commented out a line in user
Merge pull request #5 from s1anden/master

Commented out a line in user