Added npm publish action

.github/workflows/publish.yaml

@@ -0,0 +1,21 @@
+name: Publish
+
+# Run this workflow every time a new commit pushed to your repository
+on: push
+
+jobs:
+  publish:
+    # Set the type of machine to run on
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+      - uses: actions/checkout@v2
+
+      - name: Set node version
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: yarn install
+      - uses: JS-DevTools/npm-publish@v1
+        with:
+          token: ${{ secrets.NPM_TOKEN }}