README.md in zerobounce-sdk-1.0.0 vs README.md in zerobounce-sdk-1.0.1

@@ -40,9 +40,15 @@
 ```ruby
 Zerobounce.credits
 => 79   # returns -1 for invalid key
 ```
 
+Activity
+```ruby
+Zerobounce.activity('[e-mail]')
+=> {"found"=>true, "active_in_days"=>"180"}
+```
+
 Usage statistics
 ```ruby
 Zerobounce.api_usage(Date.today, Date.today)
 =>
 {"total"=>0,