feat: update README with example and motivation

README.md

@@ -1,9 +1,16 @@
 # filter-npm-deps
+
 ![npm](https://img.shields.io/npm/v/filter-npm-deps?style=flat-square)
 
 filter-npm-deps is a convenient Node.js CLI script designed to filter a given list of dependencies from your `package.json`.
 
-It supports filtering dependencies from all three commonly used dependency fields: *dependencies*, *devDependencies*, and *optionalDependencies*.
+It supports filtering dependencies from all three commonly used dependency fields: _dependencies_, _devDependencies_, and _optionalDependencies_.
+
+## 🎯 Motivation
+
+In many projects, the `package.json` file contains numerous dependencies serving different purposes.
+However, certain scenarios, like CI jobs, demand only specific dependencies in particular versions.
+Therefore `filter-npm-deps` can reduce or prune your package.json, to only contain the dependencies that you need.
 
 ## 🚀 Usage
 
@@ -13,12 +20,57 @@ To use filter-npm-deps, you can easily invoke it with npx as follows:
 npx filter-npm-deps -d [dependencies]
 ```
 
-For example, if you want to only keep "lodash" and "axios" with the given version from your package.json, you can run:
+## 🧰 Requirements
+
+- node.js 18 or higher
+
+## 📝Example
+
+Given the following package.json:
+
+```json
+{
+  "name": "my-app",
+  "description": "...",
+  "dependencies": {
+    "axios": "1.4.0",
+    "lodash-es": "4.17.21"
+  },
+  "devDependencies": {
+    "typescript": "5.1.6"
+  },
+  "optionalDependencies": {
+    "playwright": "1.36.1"
+  }
+}
+```
+
+If you want to only keep `playwright` and `lodash-es` with the given version from your package.json, you can run:
 
 ```bash
-npx filter-npm-deps -d "lodash, axios"
+npx filter-npm-deps -d "playwright,lodash-es"
+```
+
+which would result in:
+
+```json
+{
+  "name": "my-app",
+  "description": "...",
+  "dependencies": {
+    "lodash-es": "4.17.21"
+  },
+  "devDependencies": {},
+  "optionalDependencies": {
+    "playwright": "1.36.1"
+  }
+}
 ```
 
+Afterward you can install your dependencies with your package manager of choice.
+
+For example with npm:
+`npm ci`
 
 ## 💡 Alternatives
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "filter-npm-deps",
-  "version": "0.1.0",
-  "description": "",
+  "version": "0.1.1",
+  "description": "A convenient Node.js CLI script to filter and only keep a list of dependencies from your package.json",
   "engines": {
     "node": ">=18"
   },
@@ -10,7 +10,6 @@
   },
   "repository": "https://github.com/jase88/filter-npm-deps",
   "homepage": "https://github.com/jase88/filter-npm-deps#readme",
-  "author": "",
   "license": "MIT",
   "keywords": [
     "filter",