README.md in fugit-1.4.4 vs README.md in fugit-1.4.5

@@ -201,10 +201,24 @@
 
 # today (as of this coding...)
 p EtOrbi.parse('2019-04-11').wday       # => 4
 p EtOrbi.parse('2019-04-11').rweek      # => 15
 p EtOrbi.parse('2019-04-11').rweek % 2  # => 1
+
+c = Fugit.parse('* * * * tue%2')
+c.match?('2019-01-01')  # => false, since rweek % 2 == 1
+c.match?('2019-01-08')  # => true, since rweek % 2 == 0
+
+c = Fugit.parse('* * * * tue%2+1')
+c.match?('2019-01-01')  # => true, since (rweek + 1) % 2 == 0
+c.match?('2019-01-08')  # => false, since (rweek + 1) % 2 == 1
+
+# ...
 ```
+
+`sun%2` matches if Sunday and `current_date.rweek % 2 == 0`
+`tue%3+2` matches if Tuesday and `current_date.rweek + 2 % 3 == 0`
+`tue%x+y` matches if Tuesday and `current_date.rweek + y % x == 0`
 
 
 ## `Fugit::Duration`
 
 A class `Fugit::Duration` to parse duration strings (vanilla [rufus-scheduler](https://github.com/jmettraux/rufus-scheduler) ones and [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) ones).