Add 'range-start' and 'range-end' classes (#542)
Add 'range-start' and 'range-end' classes (#542)

* Add 'range-start' and 'range-end' classes

* Spaces fix

mitchrosu/react-datepicker,BrunoAlcides/react-datepicker,BrunoAlcides/react-datepicker,BrunoAlcides/react-datepicker,lmenus/react-datepicker,lmenus/react-datepicker,mitchrosu/react-datepicker,Hacker0x01/react-datepicker,Hacker0x01/react-datepicker,mitchrosu/react-datepicker,Hacker0x01/react-datepicker,lmenus/react-datepicker