Add specs.yml

.github/workflows/specs.yml

@@ -0,0 +1,17 @@
+name: Run RSpec tests
+on: [ push ]
+jobs:
+  run-rspec-tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        # Not needed with a .ruby-version file
+        ruby-version: 3.0
+        # runs 'bundle install' and caches installed gems automatically
+        bundler-cache: true
+    - name: Run tests
+      run: |
+        bundle exec rspec