Function getMonthName

getMonthName(monthIndex, shortForm?, locale?): string
Returns the name of a month, given a specific locale.
Parameters
- monthIndex: number
  The index of the month; January is 0, December is 11.
- shortForm: boolean = false
  Whether to return the short form of the month's name, e.g. the short form of "January" is "Jan".
- locale: string = undefined
  The locale in which the month's name should be returned.
Returns string