Merge branch 'patch-1' of git://github.com/izzm/activerecord-postgres-array into izzm-patch-1

Conflicts:
	lib/activerecord-postgres-array/activerecord.rb

Author: Tim Connor

lib/activerecord-postgres-array/activerecord.rb

@@ -15,7 +15,9 @@ def arel_attributes_values(include_primary_key = true, include_readonly_attribut
           if include_readonly_attributes || !self.class.readonly_attributes.include?(name)
             value = read_attribute(name)
             if column.type.to_s =~ /_array$/ && value && value.is_a?(Array)
-              value = value.to_postgres_array(new_record?)
+              value = "'#{value.to_postgres_array(new_record?)}'"
+            elsif defined?(::Hstore) && column.type == :hstore && value && value.is_a?(Hash)
+              value = value.to_hstore
             elsif klass.serialized_attributes.include?(name)
               value = @attributes[name].serialized_value
             end