Add Publish action

Author: pedrofracassi

.github/workflows/ci.yml

@@ -0,0 +1,19 @@
+name: Publish
+
+on:
+  release:
+    types: [ created ]
+
+jobs:
+  publish-npm:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - run: npm install
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.npm_token}}