a workaround for not adding first and last month in xml

[SherifMakhlouf]

Setting default last month like this

lastMonth = typedArray.getInt(R.styleable.DayPickerView_lastMonth, (calendar.get(Calendar.MONTH) - 1) % MONTHS_IN_YEAR);

usually ends up with empty listView, as the getCount will return 0. So I setting it to last month in year may be a good work around.