Update "Has-One Associations" section in README [ci skip]
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@ -597,8 +597,14 @@ If you can think of a good way to achieve this, please let me know.
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PaperTrail can restore `:has_one` associations as they were at (actually, 3 seconds before) the time.
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```ruby
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class Location < ActiveRecord::Base
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belongs_to :treasure
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has_paper_trail
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end
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class Treasure < ActiveRecord::Base
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has_one :location
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has_paper_trail
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end
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>> treasure.amount # 100
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