Replace Travis with GitHub Actions

Pulled from 23162d4348/.github/workflows/build.yml

As with factory_bot, we're no longer running against Ruby head, since we
don't have a great way to do allowed failures.

Closes #395

.github/workflows/build.yml

@@ -0,0 +1,45 @@
+name: Build
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    name: Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }}
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - "2.5"
+          - "2.6"
+          - "2.7"
+          - "3.0"
+        rails:
+          - "5.0"
+          - "5.1"
+          - "5.2"
+          - "6.0"
+          - "6.1"
+        exclude:
+          - ruby: 3.0
+            rails: "5.0"
+          - ruby: 3.0
+            rails: "5.1"
+          - ruby: 3.0
+            rails: "5.2"
+
+    runs-on: 'ubuntu-latest'
+
+    env:
+      ARUBA_TIMEOUT: 240
+      BUNDLE_GEMFILE: gemfiles/rails${{ matrix.rails }}.gemfile
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+      - name: Setup project
+        run: bundle install
+      - name: Run test
+        run: bundle exec rake

.travis.yml

@@ -1,33 +0,0 @@
-language: ruby
-env:
-  - ARUBA_TIMEOUT=240
-cache: bundler
-rvm:
-  - 2.5
-  - 2.6
-  - 2.7
-  - 3.0
-  - ruby-head
-branches:
-  only:
-    - master
-install:
-  - "bundle install --retry 3 --jobs 8"
-script: "bundle exec rake"
-gemfile:
-  - gemfiles/rails5.0.gemfile
-  - gemfiles/rails5.1.gemfile
-  - gemfiles/rails5.2.gemfile
-  - gemfiles/rails6.0.gemfile
-  - gemfiles/rails6.1.gemfile
-matrix:
-  exclude:
-    - rvm: 3.0
-      gemfile: gemfiles/rails5.0.gemfile
-    - rvm: 3.0
-      gemfile: gemfiles/rails5.1.gemfile
-    - rvm: 3.0
-      gemfile: gemfiles/rails5.2.gemfile
-  fast_finish: true
-  allow_failures:
-    - rvm: ruby-head

features/reloading.feature

@@ -52,7 +52,7 @@ Feature: automatically reloading factory_bot definitions
       # User model edited
       """
     And I run `bin/rails test` with Spring enabled
-    And I run `spring stop` with a clean environment
+    And I run `bin/spring stop` with a clean environment
     Then the output should contain "1 runs, 1 assertions"
     And the output should not contain "Failure:"
 
@@ -94,7 +94,7 @@ Feature: automatically reloading factory_bot definitions
       end
       """
     And I run `bin/rails test` with Spring enabled
-    And I run `spring stop` with a clean environment
+    And I run `bin/spring stop` with a clean environment
     Then the output should contain "1 runs, 1 assertions"
     And the output should not contain "Failure:"