Added github action

Author: asticode

.github/workflows/test.yml

@@ -0,0 +1,33 @@
+name: Test
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.20'
+
+    - name: Install dependencies
+      run: go mod download
+
+    - name: Run tests
+      run: go test -race -covermode atomic -coverprofile=covprofile ./...
+
+    - if: github.event_name != 'pull_request'
+      name: Send coverage
+      env:
+        COVERALLS_TOKEN: ${{ secrets.COVERALLS_TOKEN }}
+      run: |
+        go install github.com/mattn/goveralls@latest
+        goveralls -coverprofile=covprofile -service=github

.travis.yml

@@ -1,6 +1,6 @@
 [![GoReportCard](http://goreportcard.com/badge/github.com/asticode/go-astisub)](http://goreportcard.com/report/github.com/asticode/go-astisub)
 [![GoDoc](https://godoc.org/github.com/asticode/go-astisub?status.svg)](https://godoc.org/github.com/asticode/go-astisub)
-[![Travis](https://travis-ci.com/asticode/go-astisub.svg?branch=master)](https://travis-ci.com/asticode/go-astisub#)
+[![Test](https://github.com/asticode/go-astisub/actions/workflows/test.yml/badge.svg)](https://github.com/asticode/go-astisub/actions/workflows/test.yml)
 [![Coveralls](https://coveralls.io/repos/github/asticode/go-astisub/badge.svg?branch=master)](https://coveralls.io/github/asticode/go-astisub)
 
 This is a Golang library to manipulate subtitles.