Adding ruby action

.github/workflows/ruby.yml

@@ -0,0 +1,25 @@
+name: Ruby
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Ruby 2.6
+      uses: actions/setup-ruby@v1
+      with:
+        ruby-version: 2.6.x
+    - name: Build and test with Rake
+      run: |
+        gem install bundler
+        bundle install --jobs 4 --retry 3
+        bundle exec rubocop
+        bundle exec rake

spec/xpm_ruby_spec.rb

@@ -2,8 +2,4 @@
   it "has a version number" do
     expect(XpmRuby::VERSION).not_to be(nil)
   end
-
-  it "does something useful" do
-    expect(true).to eq(true)
-  end
 end