missing_key': Missing setting 'to_ary' in (Settingslogic::MissingSetting)

Fix Array#flatten on an array containing a Settingslogic object
binarylogic#36

Author: gittmaan

lib/settingslogic.rb

@@ -113,6 +113,9 @@ def initialize(hash_or_file = self.class.source, section = nil)
   # Called for dynamically-defined keys, and also the first key deferenced at the top-level, if load! is not used.
   # Otherwise, create_accessors! (called by new) will have created actual methods for each key.
   def method_missing(name, *args, &block)
+    super if name === :to_ary # delegate to Hash
+    super if name === :to_str # delegate to Hash
+
     key = name.to_s
     return missing_key("Missing setting '#{key}' in #{@section}") unless has_key? key
     value = fetch(key)