week title mistake in English #79
Description
The title start with SUN in Chinese,see https://github.com/AigeStudio/DatePicker/blob/master/DatePicker/src/main/java/cn/aigestudio/datepicker/bizs/languages/CN.java#L30
but start with MON in English, see
https://github.com/AigeStudio/DatePicker/blob/master/DatePicker/src/main/java/cn/aigestudio/datepicker/bizs/languages/EN.java#L30