#19 Add Quick start instruction to ReadMe

Author: kurnakovv

README.md

@@ -8,3 +8,61 @@
 [![Test without params](https://github.com/kurnakovv/stryker-net-action/actions/workflows/without-params-test.yml/badge.svg)](https://github.com/kurnakovv/stryker-net-action/actions/workflows/without-params-test.yml)
 
 </div>
+
+This is a GitHub action that runs the [Stryker.NET](https://stryker-mutator.io/docs/stryker-net/introduction/) tool
+
+# 🚀 Quick start
+
+Install dotnet-stryker (not required) | [how?](https://stryker-mutator.io/docs/stryker-net/getting-started/#install-in-project)
+
+Add config file via terminal
+```
+dotnet stryker init --config-file ".config/stryker-config.json"
+```
+
+Open `.config/stryker-config.json` file and set minimum parameters
+```json
+{
+    "stryker-config": {
+        "reporters": [
+            "html",
+            "dashboard",
+            "progress",
+        ],
+        "project-info": {
+            "name": "github.com/OWNER/YOUR_REPOSITORY_NAME"
+        }
+    }
+}
+```
+
+Where `OWNER` is your GitHub name (e.g. `kurnakovv`), and `YOUR_REPOSITORY_NAME` your repository name (e.g. `stryker-net-action`)
+
+Add `.github/workflows/stryker-net.yml` action
+```yml
+name: Stryker.NET mutation testing
+
+on: [push, pull_request]
+
+jobs:
+  stryker_net:
+    runs-on: ubuntu-latest
+    # permissions.pull-request:write is required to send a report message to a pull request (when send-report-message: "true")
+    permissions:
+      pull-requests: write
+    name: Stryker.NET GitHub action
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 9.0.x
+
+      - name: Stryker.NET
+        uses: ./
+        with:
+          config-path: ".config/stryker-config.json"
+          dashboard-api-key: ${{ secrets.STRYKER_DASHBOARD_API_KEY }}
+```

action.yml

@@ -1,6 +1,6 @@
 name: "Stryker.NET GitHub action"
 author: "kurnakovv"
-description: "Stryker .NET (Stryker Mutator) GitHub action"
+description: "Stryker .NET (Stryker Mutator) GitHub action 👽"
 branding:
   icon: "bar-chart-2"
   color: "orange"