Fix snapshot validation :check_spec_value to ignore ary order

lib/shotengai/order.rb

@@ -185,6 +185,7 @@ module Shotengai
         super
       end
 
+      # beause relation :snapshots has many types, so do not use order.snapshot to create or init a obj
       def can_buy *good_class_names
         good_classes = good_class_names.map(&:constantize)
         # 所有snapshot

lib/shotengai/snapshot.rb

@@ -159,7 +159,7 @@ module Shotengai
       # spec 字段
 
       def check_spec_value
-        errors.add(:spec_value, 'spec 与 所给系列不符。') unless spec_value.nil? || spec_value.keys == shotengai_series.spec_value.keys
+        errors.add(:spec_value, 'spec 与 所给系列不符。') unless spec_value.nil? || spec_value.keys.sort == shotengai_series.spec_value.keys.sort
       end
 
       def remark_template_empty?