lib/figaro/error.rb in figaro-1.0.0.rc1 vs lib/figaro/error.rb in figaro-1.0.0

@@ -1,9 +1,14 @@
 module Figaro
   class Error < StandardError; end
 
   class RailsNotInitialized < Error; end
-  class MissingKey < Error; end
+
+  class MissingKey < Error
+    def initialize(key)
+      super("Missing required configuration key: #{key.inspect}")
+    end
+  end
 
   class MissingKeys < Error
     def initialize(keys)
       super("Missing required configuration keys: #{keys.inspect}")
     end