added annotations
added a method to return a user's role
Added Metric fu
Merge pull request #13 from abigezunt/addannotate

added annotations
Merge pull request #14 from abigezunt/role_method

added a method to return a user's role
Merge pull request #15 from abigezunt/add_metric_fu

Added Metric fu
Added biography column to Users
Merge pull request #16 from abigezunt/add_many_columns_to_user

Added biography column to Users