README.md in zabbix-client-0.0.6 vs README.md in zabbix-client-0.0.7

@@ -20,9 +20,13 @@
 
     $ gem install zabbix-client
 
 ## Usage
 
+Method call is a thin wrapper of the JSON-RPC.
+
+JSON is created dynamically, it is checked on the server side.
+
 ```ruby
 require 'zabbix/client'
 
 client = Zabbix::Client.new('http://localhost/zabbix/api_jsonrpc.php')