Add GitHub Actions CI test

.github/workflows/node.js.yml

@@ -0,0 +1,50 @@
+# This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of node
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+
+name: Node.js CI
+
+on: [push, pull_request]
+
+env:
+  deb_packages: |
+    libcapnp-dev
+
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [12.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y ${{ env.deb_packages }}
+    - run: npm install
+    - run: npm test
+
+  macos:
+    runs-on: macOS-latest
+
+    strategy:
+      matrix:
+        node-version: [12.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: Install dependencies
+      run: |
+        brew install capnp
+    - run: npm install
+    - run: npm test

README.md

@@ -1,3 +1,5 @@
+[![Tests](https://github.com/capnproto/node-capnp/workflows/Node.js%20CI/badge.svg?branch=node10&event=push)](https://github.com/capnproto/node-capnp/actions?query=workflow%3A"Node.js+CI")
+
 # Cap'n Proto bindings for Node.js
 
 This package is a hacky wrapper around the [Cap'n Proto](http://capnproto.org)