Migrate CI to GitHub Actions

Author: itchyny

.github/workflows/ci.yaml

@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: ['1.14', '1.15' ]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+      - name: Debug Vim version
+        run: vim --version
+      - name: Install gosumcheck
+        run: env GO111MODULE=off go get github.com/haya14busa/gosum/cmd/gosumcheck
+      - name: Test
+        run: go test -v -race ./...
+      - name: Check code generation diff
+        run: bash go/generate.sh && ! git diff | grep '^'
+      - name: Check gosumcheck
+        run: gosumcheck ./...

.travis.yml

@@ -1,6 +1,6 @@
 # Vim Script Parser written in Go
 
-[![Build Status](https://travis-ci.org/vim-jp/go-vimlparser.svg?branch=master)](https://travis-ci.org/vim-jp/go-vimlparser)
+[![CI Status](https://github.com/vim-jp/go-vimlparser/workflows/CI/badge.svg)](https://github.com/vim-jp/go-vimlparser/actions)
 [![codecov](https://codecov.io/gh/vim-jp/go-vimlparser/branch/master/graph/badge.svg)](https://codecov.io/gh/vim-jp/go-vimlparser)
 [![Sourcegraph](https://sourcegraph.com/github.com/vim-jp/go-vimlparser/-/badge.svg)](https://sourcegraph.com/github.com/vim-jp/go-vimlparser?badge)
 [![GoDoc](https://godoc.org/github.com/vim-jp/go-vimlparser?status.svg)](https://godoc.org/github.com/vim-jp/go-vimlparser)