Add heroku deploy action

.github/workflows/main.yml

@@ -0,0 +1,17 @@
+name: Deploy
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: akhileshns/[email protected] # This is the action
+        with:
+          heroku_api_key: ${{secrets.HEROKU_API_KEY}}
+          heroku_app_name: ${{secrets.HEROKU_PROJECT}} #Must be unique in Heroku
+          heroku_email: ${{secrets.HEROKU_MAIL}}