ci: replace travis with github action

.github/workflows/test.yml

@@ -0,0 +1,31 @@
+name: Test
+on:
+  push:
+  pull_request:
+jobs:
+  test:
+    env:
+      BUNDLE_WITHOUT: benchmark
+    continue-on-error: ${{ matrix.fallible }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - macos-13
+        ruby:
+          - "2.7"
+          - head
+        include:
+          - fallible: false
+          - ruby: head
+            fallible: true
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: bundle exec rake

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/tonytonyjan/jaro_winkler.svg?branch=master)](https://travis-ci.org/tonytonyjan/jaro_winkler)
+![test](https://github.com/tonytonyjan/jaro_winkler/actions/workflows/test.yml/badge.svg)
 
 [jaro_winkler](https://rubygems.org/gems/jaro_winkler) is an implementation of [Jaro-Winkler distance](http://en.wikipedia.org/wiki/Jaro%E2%80%93Winkler_distance) algorithm which is written in C extension and will fallback to pure Ruby version in platforms other than MRI/KRI like JRuby or Rubinius. **Both of C and Ruby implementation support any kind of string encoding, such as UTF-8, EUC-JP, Big5, etc.**
 

jaro_winkler.gemspec

@@ -25,7 +25,6 @@ Gem::Specification.new do |spec|
     'source_code_uri' => "https://github.com/tonytonyjan/jaro_winkler/tree/v#{spec.version}",
   }
   spec.files = Dir['lib/**/*.rb', 'ext/**/*.{h,c}', 'LICENSE.txt']
-  spec.add_development_dependency 'bundler', '~> 1.7'
   spec.add_development_dependency 'rake', '~> 12.0'
   spec.add_development_dependency 'rake-compiler'
   spec.add_development_dependency 'minitest'