Add CI via GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+on:
+  push:
+    branches:
+      - '*'
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        scala-version: [2.11.11, 2.12.4]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Coursier cache
+      uses: coursier/cache-action@v6
+    - uses: coursier/setup-action@v1
+      with:
+        jvm: adopt:8
+        apps: sbt scala
+    - name: Test
+      run: sbt ++${{ matrix.scala-version }} test

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/tim-group/iterata.svg)](https://travis-ci.org/tim-group/iterata)
+[![CI](https://github.com/tim-group/iterata/actions/workflows/ci.yml/badge.svg)](https://github.com/tim-group/iterata/actions/workflows/ci.yml)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.timgroup/iterata_2.11/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.timgroup/iterata_2.11)
 
 # iterata