Merge pull request #47 from petergoldstein/feature/migrate_to_github_…

…actions

Migrate to GitHub Actions as Travis CI.org is no longer active

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby-version:
+          - head
+          - '3.2'
+          - '3.1'
+          - '3.0'
+          - '2.7'
+          - '2.6'
+          - '2.5'
+          - '2.4'
+          - '2.3'
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby ${{ matrix.ruby-version }}
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # 'bundle install' and cache
+    - name: Run tests
+      run: bundle exec rake