chore: Use GitHub Actions for CI

.github/workflows/test.yml

@@ -0,0 +1,22 @@
+name: Build and Test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: 2.7.1
+
+    - name: Install dependencies
+      run: ./script/bootstrap
+
+    - name: Run tests
+      run: ./script/cibuild

.travis.yml

@@ -1,31 +0,0 @@
-#bootstrap and build
-before_script: "./script/bootstrap"
-script: "./script/cibuild"
-
-#environment
-language: ruby
-rvm:
-  - 2.7.1
-
-addons:
-  apt:
-    packages:
-    - libcurl4-openssl-dev
-
-before_install:
-  - gem update --system
-
-branches:
-  only:
-    - gh-pages
-    - /.*/
-
-notifications:
-  email: false
-
-env:
-  global:
-    - NOKOGIRI_USE_SYSTEM_LIBRARIES=true
-
-sudo: false
-cache: bundler

README.md

@@ -1,7 +1,5 @@
 **[ChooseALicense.com](https://choosealicense.com)** aims to provide **accurate**, **non-judgmental**, and **understandable** information about popular **open source licenses** in order to **help people make informed decisions** about the projects they start, maintain, contribute to, and use.
 
-[![Build Status](https://travis-ci.org/github/choosealicense.com.svg?branch=gh-pages)](https://travis-ci.org/github/choosealicense.com)
-
 We catalog [select](CONTRIBUTING.md#adding-a-license) open source licenses with a [Jekyll collection](https://jekyllrb.com/docs/collections/) (in `_licenses`). The catalog is used to render [ChooseALicense.com](https://choosealicense.com) and is regularly vendored into [Licensee](https://github.com/licensee/licensee), which GitHub uses to provide a [license chooser and license detection](https://help.github.com/articles/adding-a-license-to-a-repository/), a [licenses API](https://developer.github.com/v3/licenses/), and to [display license descriptions and metadata](https://github.com/blog/2335-open-source-license-descriptions-and-metadata).
 
 ## Goals

spec/ci_ruby_version_spec.rb

@@ -9,9 +9,9 @@ describe 'ruby version' do
   pages_versions = JSON.parse(open('https://pages.github.com/versions.json').read)
   pages_ruby_version = pages_versions['ruby']
 
-  ci_config_file = '.travis.yml'
+  ci_config_file = '.github/workflows/test.yml'
   ci_config = YAML.load_file(ci_config_file)
-  ci_ruby_version = ci_config['rvm'][0]
+  ci_ruby_version = ci_config['jobs']['test']['steps'][1]['with']['ruby-version']
 
   context "in #{ci_config_file} and pages ruby version" do
     it 'match' do