diff --git a/.all-contributorsrc b/.all-contributorsrc
index 4c33bd7..32d18ba 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -107,6 +107,15 @@
         "code",
         "doc"
       ]
+    },
+    {
+      "login": "gajamo",
+      "name": "gajamo",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/3331072?v=4",
+      "profile": "https://github.com/gajamo",
+      "contributions": [
+        "doc"
+      ]
     }
   ]
 }
diff --git a/README.md b/README.md
index 47d521e..73b4560 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,18 @@
-# Flexbox playground
 
-[![All Contributors](https://img.shields.io/badge/all_contributors-10-orange.svg?style=flat-square)](#contributors)
+# Flexbox playground 
+[![All Contributors](https://img.shields.io/badge/all_contributors-11-orange.svg?style=flat-square)](#contributors)
+
+
+# How to install yarn
+
+
+you can find <a href="https://yarnpkg.com/lang/en/docs/install/#windows-stable" target="_blank">here</a> how to install yarn 
 
 # How to run the app - Available Scripts
 
 # Requirements
 
-You'll need to have installed `yarn@1.10.1` or greater.
+You'll need to have installed yarn@1.10.1 or greater.
 
 In the project directory, you can run:
 
@@ -103,7 +109,7 @@ Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds
 <!-- prettier-ignore -->
 | [<img src="https://avatars3.githubusercontent.com/u/18565471?v=4" width="100px;"/><br /><sub><b>Angela Ordoñez</b></sub>](http://angelitaooo.github.io)<br />[📖](https://github.com/react-medellin/flexbox-playground/commits?author=angelitaooo "Documentation") [🔧](#tool-angelitaooo "Tools") | [<img src="https://avatars3.githubusercontent.com/u/8260962?v=4" width="100px;"/><br /><sub><b>Daniel Correa</b></sub>](https://danielcb29.github.io/)<br />[📖](https://github.com/react-medellin/flexbox-playground/commits?author=danielcb29 "Documentation") | [<img src="https://avatars1.githubusercontent.com/u/23706543?v=4" width="100px;"/><br /><sub><b>Simon Hoyos</b></sub>](https://www.linkedin.com/in/simonhoyos/)<br />[💬](#question-shmesa22 "Answering Questions") [💻](https://github.com/react-medellin/flexbox-playground/commits?author=shmesa22 "Code") [📋](#eventOrganizing-shmesa22 "Event Organizing") [👀](#review-shmesa22 "Reviewed Pull Requests") [✅](#tutorial-shmesa22 "Tutorials") | [<img src="https://avatars0.githubusercontent.com/u/19338528?v=4" width="100px;"/><br /><sub><b>Robin Hurtado Abadia</b></sub>](http://robinhurtado.surge.sh)<br />[💻](https://github.com/react-medellin/flexbox-playground/commits?author=robinHurtado "Code") | [<img src="https://avatars2.githubusercontent.com/u/16061815?v=4" width="100px;"/><br /><sub><b>Maria Camila Gomez Restrepo</b></sub>](http://www.camigomez.me/)<br />[📖](https://github.com/react-medellin/flexbox-playground/commits?author=camigomez35 "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/33497419?v=4" width="100px;"/><br /><sub><b>William Gómez Ortega</b></sub>](http://www.williamgomez.me)<br />[🐛](https://github.com/react-medellin/flexbox-playground/issues?q=author%3Awilliamegomez "Bug reports") [💻](https://github.com/react-medellin/flexbox-playground/commits?author=williamegomez "Code") [📖](https://github.com/react-medellin/flexbox-playground/commits?author=williamegomez "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/3844042?v=4" width="100px;"/><br /><sub><b>kritokrator</b></sub>](https://github.com/kritokrator)<br />[📖](https://github.com/react-medellin/flexbox-playground/commits?author=kritokrator "Documentation") |
 | :---: | :---: | :---: | :---: | :---: | :---: | :---: |
-| [<img src="https://avatars2.githubusercontent.com/u/27037672?v=4" width="100px;"/><br /><sub><b>Jose Mario Gutierrez</b></sub>](https://github.com/josemariogutierrez)<br />[💻](https://github.com/react-medellin/flexbox-playground/commits?author=josemariogutierrez "Code") [🎨](#design-josemariogutierrez "Design") | [<img src="https://avatars2.githubusercontent.com/u/28201235?v=4" width="100px;"/><br /><sub><b>jsnavarroc</b></sub>](https://github.com/jsnavarroc)<br />[📖](https://github.com/react-medellin/flexbox-playground/commits?author=jsnavarroc "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/10146319?v=4" width="100px;"/><br /><sub><b>Sebastian Lacle</b></sub>](http://slacle.com/)<br />[💻](https://github.com/react-medellin/flexbox-playground/commits?author=slacle "Code") [📖](https://github.com/react-medellin/flexbox-playground/commits?author=slacle "Documentation") |
+| [<img src="https://avatars2.githubusercontent.com/u/27037672?v=4" width="100px;"/><br /><sub><b>Jose Mario Gutierrez</b></sub>](https://github.com/josemariogutierrez)<br />[💻](https://github.com/react-medellin/flexbox-playground/commits?author=josemariogutierrez "Code") [🎨](#design-josemariogutierrez "Design") | [<img src="https://avatars2.githubusercontent.com/u/28201235?v=4" width="100px;"/><br /><sub><b>jsnavarroc</b></sub>](https://github.com/jsnavarroc)<br />[📖](https://github.com/react-medellin/flexbox-playground/commits?author=jsnavarroc "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/10146319?v=4" width="100px;"/><br /><sub><b>Sebastian Lacle</b></sub>](http://slacle.com/)<br />[💻](https://github.com/react-medellin/flexbox-playground/commits?author=slacle "Code") [📖](https://github.com/react-medellin/flexbox-playground/commits?author=slacle "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/3331072?v=4" width="100px;"/><br /><sub><b>gajamo</b></sub>](https://github.com/gajamo)<br />[📖](https://github.com/react-medellin/flexbox-playground/commits?author=gajamo "Documentation") |
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification. Contributions of any kind welcome!