docs: add benmonro as a contributor (#6)

* docs: update README.md

* docs: create .all-contributorsrc

Author: allcontributors[bot]

.all-contributorsrc

@@ -0,0 +1,26 @@
+{
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "contributors": [
+    {
+      "login": "benmonro",
+      "name": "Ben Monro",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/399236?v=4",
+      "profile": "https://github.com/benmonro",
+      "contributions": [
+        "code",
+        "test",
+        "ideas",
+        "doc"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "projectName": "svelte-testing-library",
+  "projectOwner": "testing-library",
+  "repoType": "github",
+  "repoHost": "https://github.com"
+}

README.md

@@ -1,4 +1,5 @@
 <div align="center">
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors)
 <h1>svelte-testing-library</h1>
 
 <a href="https://www.emojione.com/emoji/1f410">
@@ -186,6 +187,11 @@ light-weight, simple, and understandable.
 
 ## Contributors
 
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore -->
+<table><tr><td align="center"><a href="https://github.com/benmonro"><img src="https://avatars3.githubusercontent.com/u/399236?v=4" width="100px;" alt="Ben Monro"/><br /><sub><b>Ben Monro</b></sub></a><br /><a href="https://github.com/testing-library/svelte-testing-library/commits?author=benmonro" title="Code">💻</a> <a href="https://github.com/testing-library/svelte-testing-library/commits?author=benmonro" title="Tests">⚠️</a> <a href="#ideas-benmonro" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/testing-library/svelte-testing-library/commits?author=benmonro" title="Documentation">📖</a></td></tr></table>
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
 Thanks goes to these people ([emoji key][emojis]):
 
 <!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->