Merge pull request #502 from seejohnrun/github-actions

Switch from Travis-CI to GitHub Actions

Author: seejohnrun

.github/workflows/tests.yaml

@@ -0,0 +1,29 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        rails: ['5.2', '6.0.4', '6.1']
+        ruby: ['2.6', '2.7', '3.0']
+        exclude:
+          - rails: '5.2'
+            ruby: '3.0'
+    runs-on: ubuntu-latest
+    env:
+      RAILS_VERSION: ${{ matrix.rails }}
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
+    - run: bundle exec rake

.travis.yml

@@ -1,6 +1,6 @@
 # ice_cube - Easy schedule expansion
 
-[![Build Status][travis-ice_cube-badge_image]][travis-ice_cube]
+[![Tests](https://github.com/seejohnrun/ice_cube/workflows/Tests/badge.svg)](https://github.com/seejohnrun/ice_cube/actions?query=workflow%3ATests)
 [![Gem Version](https://badge.fury.io/rb/ice_cube.svg)](http://badge.fury.io/rb/ice_cube)
 
 ```bash