Refactor docs

Author: wooorm

readme.md

@@ -1,48 +1,55 @@
-# trim-trailing-lines [![Build Status](https://img.shields.io/travis/wooorm/trim-trailing-lines.svg?style=flat)](https://travis-ci.org/wooorm/trim-trailing-lines) [![Coverage Status](https://img.shields.io/coveralls/wooorm/trim-trailing-lines.svg?style=flat)](https://coveralls.io/r/wooorm/trim-trailing-lines?branch=master)
+# trim-trailing-lines [![Build Status][travtrim-trailing-lines]][travis] [![Coverage Status][codecov-badge]][codecov]
 
 Remove final newline characters from a string.
 
 ## Installation
 
-[npm](https://docs.npmjs.com/cli/install):
+[npm][]:
 
 ```bash
 npm install trim-trailing-lines
 ```
 
-**trim-trailing-lines** is also available for [bower](http://bower.io/#install-packages),
-[component](https://github.com/componentjs/component), [duo](http://duojs.org/#getting-started),
-and for AMD, CommonJS, and globals ([uncompressed](trim-trailing-lines.js) and
-[compressed](trim-trailing-lines.min.js)).
-
 ## Usage
 
-Dependencies.
-
-```javascript
+```js
 var trimTrailingLines = require('trim-trailing-lines');
-```
-
-Trim trailing newline characters:
 
-```javascript
-trimTrailingLines('foo\nbar'); // 'foo\nbar'
-trimTrailingLines('foo\nbar\n'); // 'foo\nbar'
-trimTrailingLines('foo\nbar\n\n'); // 'foo\nbar'
+trimTrailingLines('foo\nbar'); //=> 'foo\nbar'
+trimTrailingLines('foo\nbar\n'); //=> 'foo\nbar'
+trimTrailingLines('foo\nbar\n\n'); //=> 'foo\nbar'
 ```
 
 ## API
 
-### trimTrailingLines(value)
+### `trimTrailingLines(value)`
 
 Remove final newline characters from `value`.
 
-Parameters:
+###### Parameters
 
 *   `value` (`string`) — Value with trailing newlines, coerced to string.
 
-Returns: `string` — Value without trailing newlines.
+###### Returns
+
+string\` — Value without trailing newlines.
 
 ## License
 
-[MIT](LICENSE) @ [Titus Wormer](http://wooorm.com)
+[MIT][license] © [Titus Wormer][author]
+
+<!-- Definitions -->
+
+[travtrim-trailing-lines]: https://img.shields.io/travis/wooorm/trim-trailing-lines.svg
+
+[travis]: https://travis-ci.org/wooorm/trim-trailing-lines
+
+[codecov-badge]: https://img.shields.io/codecov/c/github/wooorm/trim-trailing-lines.svg
+
+[codecov]: https://codecov.io/github/wooorm/trim-trailing-lines
+
+[npm]: https://docs.npmjs.com/cli/install
+
+[license]: LICENSE
+
+[author]: http://wooorm.com