Drop travis ci in favor of github actions

Drop EOL ruby versions from the test matrix

Action script based off: https://github.com/actions/starter-workflows/blob/main/ci/ruby.yml

.github/workflows/test.yml

@@ -0,0 +1,28 @@
+name: Test
+
+on:
+ push:
+ branches:
+ - master
+ pull_request:
+ branches:
+ - master
+
+permissions:
+ contents: read
+
+jobs:
+ test:
+
+ runs-on: ubuntu-latest
+ strategy:
+ matrix:
+ ruby-version: ['3.0', '3.1', '3.2', '3.3', '3.4', 'head']
+
+ steps:
+ - uses: actions/checkout@v4
+ - uses: ruby/setup-ruby@v1
+ with:
+ ruby-version: ${{ matrix.ruby-version }}
+ bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+ - run: bundle exec rake

README.rdoc

@@ -1,7 +1,5 @@
 ROXML Ruby Object to XML mapping library.
 
-{https://travis-ci.org/Empact/roxml.svg?branch=master}[https://travis-ci.org/Empact/roxml]
-
 For more information visit:
 
  http://rdoc.info/projects/Empact/roxml

roxml.gemspec

@@ -16,9 +16,7 @@ Gem::Specification.new do |s|
  "README.rdoc"
  ]
  s.files = [
- ".gitmodules",
  ".rspec",
- ".travis.yml",
  "Gemfile",
  "Gemfile.lock",
  "History.txt",