Migrate to GitHub Actions

Author: enomotodev

.github/workflows/test.yml

@@ -0,0 +1,40 @@
+name: Test
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby_version:
+          - '2.6'
+          - '2.7'
+          - '3.0'
+        rails_version:
+          - '5.2.6'
+          - '6.0.4'
+          - '6.1.4'
+        exclude:
+          - ruby_version: '3.0'
+            rails_version: '5.2.6'
+
+    name: Ruby ${{ matrix.ruby_version }} / Rails ${{ matrix.rails_version }}
+
+    env:
+      RAILS: ${{ matrix.rails_version }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby_version }}
+          bundler-cache: true
+
+      - name: Test
+        run: bundle exec rspec spec

.travis.yml

@@ -1,6 +1,6 @@
 # ActiveAdminImport
 
-[![Travis Build   ][build_badge]][build_link]
+[![Build Status   ][build_badge]][build_link]
 [![Coverage Status][coveralls_badge]][coveralls_link]
 [![Code Climate   ][codeclimate_badge]][codeclimate_link]
 [![Gem Version    ][rubygems_badge]][rubygems_link]
@@ -91,8 +91,8 @@ Tool                  | Description
 [rchardet]: https://github.com/jmhodges/rchardet
 [activerecord-import]: https://github.com/zdennis/activerecord-import
 
-[build_badge]: https://travis-ci.org/activeadmin-plugins/active_admin_import.svg?branch=master
-[build_link]: https://travis-ci.org/activeadmin-plugins/active_admin_import
+[build_badge]: https://github.com/activeadmin-plugins/active_admin_import/actions/workflows/test.yml/badge.svg
+[build_link]: https://github.com/activeadmin-plugins/active_admin_import/actions
 [coveralls_badge]: https://coveralls.io/repos/activeadmin-plugins/active_admin_import/badge.svg
 [coveralls_link]: https://coveralls.io/github/activeadmin-plugins/active_admin_import
 [codeclimate_badge]: https://codeclimate.com/github/activeadmin-plugins/active_admin_import/badges/gpa.svg