feat(forEach): Add forEach snippet

Author: cristinafsanz

README.md

@@ -1,2 +1,43 @@
 # code-snippets
-Example code with gifs
+
+Code snippets with gifs, to avoid copy and paste the code and write it all.
+
+## Files for each snippet
+
+There is a file for each functionality, to be able to execute it.
+
+Example:
+
+- File es6/forEach/forEach.js
+
+  - Make it executable: 
+  
+  ```
+  chmod +x es6/forEach/forEach.js
+  ```
+
+  - Run it:
+
+  ```
+  ./es6/forEach/forEach.js
+  ```
+
+## Table of Contents
+
+- [forEach](#forEach)
+
+## forEach
+
+> Example:
+
+```javascript
+const array = ['this', 'is', 'a', 'test'];
+
+array.forEach((item, index) => {
+  
+});
+```
+
+> Gif:
+
+![Escribir forEach paso a paso](es6/forEach/forEach.gif?raw=true)

es6/forEach/forEach.gif

@@ -0,0 +1,15 @@
+#!/usr/bin/env node
+
+const array = ['this', 'is', 'a', 'test'];
+
+// ES6
+array.forEach((item1, index1) => {
+  console.log({item1});
+  console.log({index1});
+});
+
+// ES5
+array.forEach(function(item2, index2) {
+  console.log({item2});
+  console.log({index2});
+});