In Exchange:
1) Improved currencies association
2) Added to_s method
3) Improved save_current_rates method
Added in Currency:
1) by_code scope
2) median and chart_data class methods
3) to_s and mean price methods
Added raphael and morris js files
Added morris.css.scss
Added report.js file with function for drawing charts
Renamed exchanges css class
In Money controller:
1) Ordered exchanges in index action
2) Added body of report action
3) Added currency and currency_rates methods
Added Money helper
Included gon to application layout
Improved money index view
Added money show and report views
Added kaminari views
Added date column to currencies table
Added gon gem
Required open-uri in Money controller
Added RatesWorker
Added whenever gem
Added schedule for RatesWorker
Added RatesMailer