Add example for Cow#53113

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bors merged 3 commits intorust-lang:masterfrom

kpp:more_docs_for_cow

Aug 31, 2018

Commits on Aug 6, 2018

Add one more example for Cow that shows how to keep Cow in a struct
Roman Proskuryakov
committed

Commits on Aug 15, 2018

Fix review notes
Roman Proskuryakov
committed
Review fix
Roman Proskuryakov
committed