Update README.md

Author: giometrix

README.md

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 [![NuGet](https://img.shields.io/nuget/v/TableStorage.Abstractions.Trie.svg)](https://www.nuget.org/packages/TableStorage.Abstractions.Trie)
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 # TableStorage.Abstractions.Trie
 This project creates an "index" in Azure Table Storage using a [trie](https://en.wikipedia.org/wiki/Trie)-like structure to enable type-ahead style "begins with" search scenarios, e.g. "Jo" will yield "John Smith, Joe Taylor, Josephine Baker."