Merge pull request #1 from brittlewis12/master

added missing dependency to gemfile
Migrations changed: Citizens to Single Table Inheritance
Delete schema.rb

Local migrations changed, schema reset to reflect those changes
Delete TributeSponsor Join Table

Tributes and Sponsors are now types of Citizen
Delete RoundTribute Join Table

Tributes are now types of Citizen
Delete Tribute Table Migration 

Tributes are now a type of Citizen
Delete Sponsors Table Migration 

Sponsors are now a type of Citizen
Schema merge conflict fixed