Merge pull request #49 from anakinj/github-actions

Replace TravisCI with GitHub Actions for supported Rubies

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - "*"
+  pull_request:
+    branches:
+      - "*"
+
+jobs:
+  testgi:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ["2.6", "2.7", "3.0"]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true
+
+    - name: Run tests
+      run: |
+          bundle install --jobs 4 --retry 3
+          bundle exec rspec