FIX: run expiring said in connection

lib/betfair_api_ng_rails/api/connection.rb

@@ -24,7 +24,7 @@ module BetfairApiNgRails
       include Api::ConnectionExt::Formatting
 
       def expire_provider
-        BetfairApiNgRails::Api::SessionManager.expire_ssoid username
+        BetfairApiNgRails::Api::SessionManager.expire_ssoid account
       end
 
       protected

spec/betfair_api_ng_rails/api/connection_spec.rb

@@ -33,8 +33,8 @@ describe BetfairApiNgRails::Api::Connection do
 
   describe "#expire_provider" do
     it "resets account's ssoid" do
-      allow(connection).to receive(:username).and_return acc_name
-      expect(BetfairApiNgRails::Api::SessionManager).to receive(:expire_ssoid).with(acc_name)
+      allow(connection).to receive(:account).and_return account
+      expect(BetfairApiNgRails::Api::SessionManager).to receive(:expire_ssoid).with(account)
       connection.expire_provider
     end
   end