doc(README): added more example usage

CONTRIBUTORS.md

@@ -3,7 +3,7 @@
 
 This handcrafted artisinal software is brought to you by:
 
-| <img height="80" src="https://avatars.githubusercontent.com/u/261635?v=4"><br><a href="https://github.com/msimerson">msimerson</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=msimerson">60</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/1432035?v=4"><br><a href="https://github.com/kcberg">kcberg</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=kcberg">1</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/662371?v=4"><br><a href="https://github.com/baudehlo">baudehlo</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=baudehlo">1</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/550490?v=4"><br><a href="https://github.com/smfreegard">smfreegard</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=smfreegard">1</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/203240?v=4"><br><a href="https://github.com/lnedry">lnedry</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=lnedry">1</a>)|
+| <img height="80" src="https://avatars.githubusercontent.com/u/261635?v=4"><br><a href="https://github.com/msimerson">msimerson</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=msimerson">61</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/1432035?v=4"><br><a href="https://github.com/kcberg">kcberg</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=kcberg">1</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/662371?v=4"><br><a href="https://github.com/baudehlo">baudehlo</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=baudehlo">1</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/550490?v=4"><br><a href="https://github.com/smfreegard">smfreegard</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=smfreegard">1</a>)| <img height="80" src="https://avatars.githubusercontent.com/u/203240?v=4"><br><a href="https://github.com/lnedry">lnedry</a> (<a href="https://github.com/haraka/haraka-plugin-access/commits?author=lnedry">1</a>)|
 | :---: | :---: | :---: | :---: | :---: |
 
 <sub>this file is maintained by [.release](https://github.com/msimerson/.release)</sub>

README.md

@@ -8,11 +8,30 @@
 
 Fixtures for testing Haraka and plugins
 
-# Usage
+## Usage
 
-`const fixtures = require('haraka-test-fixtures');`
+```js
+const fixtures = require('haraka-test-fixtures')
+````
 
-# Exports the following fixture types:
+### A common pattern
+
+```js
+beforeEach(() => {
+  this.plugin = new fixtures.plugin('pluginName');
+
+  this.connection = fixtures.connection.createConnection()
+  this.connection.init_transaction()
+})
+
+describe('pluginName', () => {
+  it('registers', () => {
+    this.plugin.register();
+  })
+})
+```
+
+## Exports the following fixture types:
 
 - connection
 - line_socket