docs: add BBlackwo as a contributor (#164)

Author: allcontributors[bot]

.all-contributorsrc

@@ -140,6 +140,16 @@
         "test",
         "bug"
       ]
+    },
+    {
+      "login": "BBlackwo",
+      "name": "Benjamin Blackwood",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/7598058?v=4",
+      "profile": "https://twitter.com/B_Blackwo",
+      "contributions": [
+        "doc",
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -201,6 +201,9 @@ Thanks goes to these people ([emoji key][emojis]):
     <td align="center"><a href="https://github.com/Ombrax"><img src="https://avatars0.githubusercontent.com/u/7486723?v=4" width="100px;" alt=""/><br /><sub><b>Ombrax</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=Ombrax" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/rafaelss95"><img src="https://avatars0.githubusercontent.com/u/11965907?v=4" width="100px;" alt=""/><br /><sub><b>Rafael Santana</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=rafaelss95" title="Code">💻</a> <a href="https://github.com/testing-library/angular-testing-library/commits?author=rafaelss95" title="Tests">⚠️</a> <a href="https://github.com/testing-library/angular-testing-library/issues?q=author%3Arafaelss95" title="Bug reports">🐛</a></td>
   </tr>
+  <tr>
+    <td align="center"><a href="https://twitter.com/B_Blackwo"><img src="https://avatars0.githubusercontent.com/u/7598058?v=4" width="100px;" alt=""/><br /><sub><b>Benjamin Blackwood</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=BBlackwo" title="Documentation">📖</a> <a href="https://github.com/testing-library/angular-testing-library/commits?author=BBlackwo" title="Tests">⚠️</a></td>
+  </tr>
 </table>
 
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