Rough implementation of sample calendar
Use i18n
Merge pull request #2 from shin1ohno/sample_app

Set sample app up for testing
Implement EventCalendar::Calendar#events_on(date)
Update environments
Implement helpers
Update sample app styles
Implement helper mothods in gem
Refactor sample app scss
Implement render_monthly(calendar) helper method
View templates are now packed in gem
CSS are now packed in gem
Refactor/Redesign
Sample app now has multi event models
Change partial name
Fix failing specs