Create GitHub Workflow config to simulate Travis builds

.github/workflows/code_style_checks.yaml

@@ -0,0 +1,36 @@
+name: Code Style Checks
+
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'README.md'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'README.md'
+
+jobs:
+  rubocop:
+    name: Rubocop
+    if: "contains(github.event.commits[0].message, '[ci skip]') == false"
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu
+        ruby:
+          - "jruby"
+    runs-on: ${{ matrix.os }}-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - name: Run Rubocop
+        run: bundle exec rubocop

.github/workflows/tests.yaml

@@ -0,0 +1,50 @@
+name: Tests
+
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'README.md'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'README.md'
+
+jobs:
+  unit_tests:
+    name: Unit Tests
+    if: "contains(github.event.commits[0].message, '[ci skip]') == false"
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu
+        ruby:
+          - "1.9.2"
+          - "1.9.3"
+          - "2.0"
+          - "2.1"
+          - "2.2"
+          - "2.3"
+          - "2.4"
+          - "2.5"
+          - "2.6"
+          - "2.7"
+        test_command: ["bundle exec rspec && bundle exec cucumber"]
+        include:
+          - os: ubuntu
+            ruby: "2.4.2"
+            test_command: "bundle exec rspec"
+    runs-on: ${{ matrix.os }}-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - name: Test
+        run: ${{ test_command }}

.gitignore

@@ -1,5 +1,6 @@
 *.swp
 *.swo
 .*
+!.github
 Gemfile.lock
 tmp/aruba