README.md in hightop-0.0.4 vs README.md in hightop-0.1.0

@@ -21,19 +21,25 @@
 ```
 
 Include nil values
 
 ```ruby
-Visit.top(:referring_domain, nil: true)
+Visit.top(:search_keyword, nil: true)
 ```
 
 Works with multiple groups
 
 ```ruby
-Visit.top([:city, :referring_domain])
+Visit.top([:city, :browser])
 ```
 
+And expressions
+
+```ruby
+Visit.top("LOWER(referring_domain)")
+```
+
 ## Installation
 
 Add this line to your application’s Gemfile:
 
 ```ruby
@@ -43,9 +49,13 @@
 And then execute:
 
 ```sh
 bundle
 ```
+
+## History
+
+View the [changelog](https://github.com/ankane/hightop/blob/master/CHANGELOG.md)
 
 ## Contributing
 
 Everyone is encouraged to help improve this project. Here are a few ways you can help: