Update .all-contributorsrc file

.all-contributorsrc

@@ -0,0 +1,14 @@
+{
+  "projectName": "store-header",
+  "projectOwner": "vtex-apps",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "files": [
+    "docs/README.md"
+  ],
+  "imageSize": 100,
+  "commit": true,
+  "commitConvention": "none",
+  "contributors": [],
+  "contributorsPerLine": 7
+}

docs/README.md

@@ -1,4 +1,7 @@
 📢 Use this project, [contribute](https://github.com/vtex-apps/breadcrumb) to it or open issues to help evolve it using [Store Discussion](https://github.com/vtex-apps/store-discussion).
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-0-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 # Header
 
@@ -158,3 +161,16 @@ In order to apply CSS customizations in these and other blocks, follow the instr
 | `headerSpacer` | 
 | `headerStickyRow` | 
 | `headerRowContentContainer` |
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<!-- markdownlint-enable -->
+<!-- prettier-ignore-end -->
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!