lib/trend.rb in trend-0.1.0 vs lib/trend.rb in trend-0.1.1

@@ -15,15 +15,28 @@
 
   def self.forecast(*args)
     client.forecast(*args)
   end
 
+  def self.correlation(*args)
+    client.correlation(*args)
+  end
+
   def self.url
     @url ||= ENV["TREND_URL"] || "https://trendapi.org"
   end
 
   def self.url=(url)
     @url = url
+    @client = nil
+  end
+
+  def self.api_key
+    @api_key ||= ENV["TREND_API_KEY"]
+  end
+
+  def self.api_key=(api_key)
+    @api_key = api_key
     @client = nil
   end
 
   # private
   def self.client