Add publish script (#152)

* Add publish script

* Maybe fix yaml

Author: ankeetmaini

.github/workflows/publish.yml

@@ -0,0 +1,21 @@
+name: publish on release
+
+on: [release]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: install dependencies
+        run: yarn
+
+      - name: npm publish
+        run: |
+          npm config set //registry.npmjs.org/:_authToken=$NODE_AUTH_TOKEN
+          npm publish || true
+        env:
+          CI: true
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}