README.md in timespan-0.5.9 vs README.md in timespan-0.6.0

@@ -28,9 +28,18 @@
 	t = Timespan.new(:from => 2.days.ago, :duration => "5 months and 2 weeks")	
 ```
 
 See specs for more examples of usage
 
+## For use with Mongoid
+
+```ruby
+gem 'mongoid'
+gem 'origin-selectable_ext'
+
+gem 'timespan'
+```
+
 ## Comparison
 
 ```ruby
 timespan.between?(2.days.ago, 1.minute.from_now)
 timespan.between?(1.days, 3.days)