Add pipeline

.github/workflows/publish_gem.yml

@@ -0,0 +1,20 @@
+name: Publish Gem
+
+on:
+  push:
+    branches:
+      - "*"
+    tags:
+      - v*
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Release Gem
+        if: contains(github.ref, 'refs/tags/v')
+        uses: dawidd6/[email protected]
+        with:
+          api_key: ${{secrets.RUBYGEMS_API_KEY}}