ci: add semantic release

.github/workflows/release.yml

@@ -0,0 +1,19 @@
+name: Semantic Release
+on:
+  push:
+    branches:
+      - master
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: lts/*
+      - run: npm ci
+      - env:
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npx semantic-release

README.md

@@ -1,6 +1,6 @@
 # jsonlint
 
-[![Node.js CI status](https://github.com/fengzilong/@biu/jsonlint/workflows/Node.js%20CI/badge.svg)](https://github.com/fengzilong/@biu/jsonlint/actions)
+[![Node.js CI status](https://github.com/fengzilong/@biu/jsonlint/workflows/Node.js%20CI/badge.svg)](https://github.com/fengzilong/@biu/jsonlint/actions) [![npm](https://img.shields.io/npm/v/@biu/jsonlint.svg)](https://www.npmjs.com/package/@biu/jsonlint)
 
 lint your json, report all errors at once