Use doctoc

Author: sfischer13

README.md

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+## Contents
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 - [Introduction](#introduction)
 - [Installation](#installation)
 - [Tools](#tools)
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   - [trim](#trim)
 - [Credits](#credits)
 
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+
 ## Introduction
 
 The *Data Utilities* are a collection of handy text manipulation tools. These tools are supposed to make a [data wrangler](https://en.wikipedia.org/wiki/Data_wrangling)’s life on the command-line easier.