use GitHub Actions instead of Travis CI

https://blog.travis-ci.com/2020-11-02-travis-ci-new-billing

fix #101

Author: xuwei-k

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: CI
+on:
+  pull_request:
+  push:
+  schedule:
+  - cron: '0 0 * * 0'
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+    - uses: actions/[email protected]
+    - uses: actions/setup-ruby@v1
+      with:
+        ruby-version: "2.7.2"
+    - run: gem install bundler:1.17.3
+    - run: bundle install
+    - run: bundle exec middleman build
+    - if: ${{ !github.event.repository.fork && github.ref == 'refs/heads/develop' && github.event_name == 'push' }}
+      uses: JamesIves/[email protected]
+      with:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        BRANCH: master
+        FOLDER: ./build
+        CLEAN: true

.ruby-version

@@ -1 +1 @@
-2.3.4
+2.7.2

.travis.yml

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '2.3.4'
+ruby '2.7.2'
 
 gem 'middleman', '3.4.1'
 gem 'middleman-syntax'

.travis/deploy_rsa.enc

@@ -1,7 +1,5 @@
 ## ScalikeJDBC website
 
-[![Build Status](https://travis-ci.com/scalikejdbc/scalikejdbc.github.io.svg?branch=develop)](https://travis-ci.com/scalikejdbc/scalikejdbc.github.io)
-
 http://scalikejdbc.org/
 
 ### How to contribute scalikejdbc.org?