Update README to version 0.4

Author: OmriBromberg

README.md

@@ -59,4 +59,9 @@ dateMathBuilder.build();
 ```java
 // gets all the patterns of datetimes between start and end
 DateMathFormatter.getAllPatternsBetween(ZonedDateTime.now().minus(7, ChronoUnit.YEARS), ZonedDateTime.now(), "yyyy-MM-dd HH");
+```
+#### Collection\<String\> getAllPatternsBetween(ZonedDateTime start, ZonedDateTime end)
+```java
+// gets all the patterns of datetimes between start and end
+dateMathFormatter.getAllPatternsBetween(ZonedDateTime.now().minus(7, ChronoUnit.YEARS), ZonedDateTime.now(), "yyyy-MM-dd HH");
 ```