Use Actions

.github/workflows/main.yml

@@ -0,0 +1,21 @@
+name: main
+on:
+  - pull_request
+  - push
+jobs:
+  main:
+    name: '${{ matrix.node }}'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dcodeIO/setup-node-nvm@master
+        with:
+          node-version: ${{ matrix.node }}
+      - run: npm install
+      - run: npm test
+      - uses: codecov/codecov-action@v1
+    strategy:
+      matrix:
+        node:
+          - lts/dubnium
+          - node

.travis.yml

@@ -1,5 +0,0 @@
-language: node_js
-node_js:
-  - lts/dubnium
-  - node
-after_script: bash <(curl -s https://codecov.io/bash)

readme.md

@@ -224,9 +224,9 @@ abide by its terms.
 
 <!-- Definitions -->
 
-[build-badge]: https://img.shields.io/travis/micromark/micromark-extension-directive.svg
+[build-badge]: https://github.com/micromark/micromark-extension-directive/workflows/main/badge.svg
 
-[build]: https://travis-ci.org/micromark/micromark-extension-directive
+[build]: https://github.com/micromark/micromark-extension-directive/actions
 
 [coverage-badge]: https://img.shields.io/codecov/c/github/micromark/micromark-extension-directive.svg