Update README.md

README.md

@@ -19,7 +19,7 @@ A range represents an area or extend between 2 limits: upper and lower limit. Th
 
 ### IsBetween/HappenedDuring
 Here fluentRanges exposes convenient extension methods for integers, doubles, datetime(offset) to code against ranges.
-if(age.IsBetween(new IntRange(13,25)) then {}
+ ''' if(age.IsBetween(new IntRange(13,25)) then {}
 if(invoiceAmount.IsBetween(new IntRange(1000-5,1000+5)) then {}
 if(eventDate.HappenedDuring(new DateTimeRange(DateTime.Now, DateTime.Now.AddDays(2)) then {}
 
@@ -30,7 +30,31 @@ if(new DateTimeRange(DateTime.Now, DateTime.Now.AddDays(2).Intersect(new DateTim
 
 ### Intersection
 var i = new IntRange(5,16).Intersection(new IntRange(13,25))  /* i == new IntRange(13,16) */
-var d = new DateTimeRange(DateTime.Now.addAys(-1), DateTime.Now.AddDays(1).Intersection(new DateTimeRange(DateTime.Now, DateTime.Now.AddDays(2)) /* i == new DateTimeRange(DateTime.Now,DateTime.Now.AddDays(1)) */
+var d = new DateTimeRange(DateTime.Now.addDays(-1), DateTime.Now.AddDays(1).Intersection(new DateTimeRange(DateTime.Now, DateTime.Now.AddDays(2)) /* i == new DateTimeRange(DateTime.Now,DateTime.Now.AddDays(1)) */
+
+### Offset
+var i = new IntRange(5,16).Offset(2)  /* i == new IntRange(7,18) */
+var d = new DateTimeRange(DateTime.Now, DateTime.Now.AddDays(1)).Offset(TimeSpan.FromDays(1)) /* d == new DateTimeRange(DateTime.Now.AddDays(1), DateTime.Now.AddDays(2)) */
+
+### Ranges are immutable
+The limits of any range instance can not be changed. Methods like Offset, SetLower, SetUpper all return new Range instances
+var i = new IntRange(5,16)
+d = i.Offset(2) /* the limits of i have not been ofsetted.*/
+
+### Ranges are equatable
+Range are treated as equal only if both range instances have the same lower and upper limits
+var i = new IntRange(5,16)
+var d = ne IntRange(5,16);
+d.Equals(i) /* returns true*/
+Object.ReferenceEquals(i, d) /* returns false*/
+
+### Ranges are sortable
+var i = new IntRange(5,16)
+var d = ne IntRange(5,16);
+
+
+### ToString()
+Console.WriteLine(new IntRange(5,16).ToString()) /* ==> "Lower:5, Upper:16, Width:11" */
 
 
 ### IsLesserThen/HappenedBefore