Add a testing workflow

Author: Edouard-chin

.github/workflows/main.yml

@@ -0,0 +1,15 @@
+name: "Run the test suite"
+on: push
+
+jobs:
+  test:
+    timeout-minutes: 10
+    name: "Testing the gem"
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Setup ruby"
+        uses: "ruby/setup-ruby@v1"
+        with:
+          bundler-cache: true
+      - name: "Run the test suite"
+        run: "bundle exec rake test"