👷 Replace Travis with GitHub Actions

Author: fabsrc

.github/workflows/main.yml

@@ -0,0 +1,25 @@
+name: CI
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version:
+          - '16'
+          - '14'
+          - '12'
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm ci
+      - run: npm test

.travis.yml

@@ -1,6 +1,6 @@
 # GraphQL Schema Diff
 
-[![Build Status](https://img.shields.io/travis/fabsrc/graphql-schema-diff.svg?style=flat-square)](https://travis-ci.org/fabsrc/graphql-schema-diff)
+[![Build Status](https://img.shields.io/github/workflow/status/fabsrc/graphl-schema-diff/CI/master.svg?style=flat-square)](https://github.com/fabsrc/graphl-schema-diff/actions?query=workflow%3A%22CI%22)
 [![npm](https://img.shields.io/npm/v/graphql-schema-diff.svg?style=flat-square)](https://www.npmjs.com/package/graphql-schema-diff)
 [![Dependencies](https://img.shields.io/david/fabsrc/graphql-schema-diff.svg?style=flat-square)](https://david-dm.org/fabsrc/graphql-schema-diff)
 [![Development Dependencies](https://img.shields.io/david/dev/fabsrc/graphql-schema-diff.svg?style=flat-square)](https://david-dm.org/fabsrc/graphql-schema-diff?type=dev)