Update README.md

Author: Razza2018

README.md

@@ -1 +1,19 @@
-# clean-node_modules
+# Clean node_modules
+
+This script will delete all *node_modules* directories that are inside the children of the parent directory from where the script is run.
+
+Directory structure example:
+
+- project 1
+  - *node_modules*
+  - index.js
+- project 2
+  - *node_modules*
+  - index.js
+- project 3
+  - *node_modules*
+  - index.js
+- clean-node-modules
+  - **clean-node_modules.js**
+
+Running `node clean-node_modules.js` will delete all of the *node_modules* folders.