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+ 

        # Date.+

(from ruby core)
---
    d + other  ->  date

---

Returns a date object pointing `other` days after self.  The other
should be a numeric value.  If the other is a fractional number, assumes
its precision is at most nanosecond.

    Date.new(2001,2,3) + 1    #=> #<Date: 2001-02-04 ...>
    DateTime.new(2001,2,3) + Rational(1,2)
                              #=> #<DateTime: 2001-02-03T12:00:00+00:00 ...>
    DateTime.new(2001,2,3) + Rational(-1,2)
                              #=> #<DateTime: 2001-02-02T12:00:00+00:00 ...>
    DateTime.jd(0,12) + DateTime.new(2001,2,3).ajd
                              #=> #<DateTime: 2001-02-03T00:00:00+00:00 ...>

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