Create release.yml (#72)

* Create release.yml

* Update release.yml

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+name: NPM Release
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  Release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js v12.x
+        uses: actions/setup-node@v2
+        with:
+          node-version: '12.x'
+          registry-url: 'https://registry.npmjs.org'
+      - name: Install dependencies
+        run: npm install
+      - name: build package
+        run: npm run build
+      - name: cp file
+        run: cp {package.json,README.md,LICENSE,.npmignore} dist
+      - name: open dist
+        run: cd dist
+      - name: Npm publish
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}
+