Merge pull request #50 from sirupsen/sans-warnings

Drop warning re: @api_key not initialized

lib/airrecord/table.rb

@@ -1,13 +1,18 @@
 module Airrecord
   class Table
     class << self
-      attr_accessor :base_key, :table_name, :api_key, :associations
+      attr_accessor :base_key, :table_name
+      attr_writer :api_key
 
       def client
         @@clients ||= {}
         @@clients[api_key] ||= Client.new(api_key)
       end
 
+      def api_key
+        defined?(@api_key) ? @api_key : Airrecord.api_key
+      end
+
       def has_many(method_name, options)
         define_method(method_name.to_sym) do
           # Get association ids in reverse order, because Airtable’s UI and API
@@ -28,10 +33,6 @@ def belongs_to(method_name, options)
 
       alias has_one belongs_to
 
-      def api_key
-        @api_key || Airrecord.api_key
-      end
-
       def find(id)
         response = client.connection.get("/v0/#{base_key}/#{client.escape(table_name)}/#{id}")
         parsed_response = client.parse(response.body)