README.md in naver-searchad-api-0.0.4 vs README.md in naver-searchad-api-0.0.6

@@ -38,13 +38,19 @@
 
 To use an API, instantiate the service. For example to use the Campaign API:
 
 ```ruby
 require 'naver/searchad/api/campaign/service'
+require 'naver/searchad/api/auth'
 
 Campaign = Naver::Searchad::Api::Campaign # Alias the module
 campaign = Campaign::Service.new
 campaign.authorization = Naver::Searchad::Api::Auth.get_application_default # See Below Authorization
+
+# Read all campaigns (with camelCase response)
+campaign.list_campaigns(options: { decode_snake_case: false }) do |res, err|
+  puts res
+end
 
 # Read campaigns by ids
 campaign.list_campaigns_by_ids(['campaign_id_1', 'campaign_id_2']) do |res, err|
   puts res
 end