chore: migrate CI to GitHub actions

.github/workflows/CI.yml

@@ -0,0 +1,32 @@
+name: CI
+on: [ push, pull_request ]
+jobs:
+  Build:
+
+    strategy:
+      matrix:
+        os: [ ubuntu-latest ]
+        node-version: [ 14 ]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Use Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: Cache Node.js modules
+      uses: actions/cache@v2
+      with:
+        # npm cache files are stored in `~/.npm` on Linux/macOS
+        path: ~/.npm
+        key: ${{ runner.OS }}-node-${{ hashFiles('**/package-lock.json') }}
+        restore-keys: |
+          ${{ runner.OS }}-node-
+          ${{ runner.OS }}-
+    - name: Install dependencies
+      run: npm ci
+    - name: Build
+      run: npm run all

.npmignore

@@ -1,3 +1,3 @@
 .eslintrc
-.travis.yml
 test
+.github

README.md

@@ -1,6 +1,6 @@
 # zeebe-bpmn-moddle
 
-[![Build Status](https://travis-ci.com/zeebe-io/zeebe-bpmn-moddle.svg)](https://travis-ci.com/zeebe-io/zeebe-bpmn-moddle)
+[![CI](https://github.com/zeebe-io/zeebe-bpmn-moddle/workflows/CI/badge.svg)](https://github.com/zeebe-io/zeebe-bpmn-moddle/actions?query=workflow%3ACI)
 
 This project defines the [Zeebe](https://zeebe.io) namespace extensions for BPMN 2.0 as a [moddle](https://github.com/bpmn-io/moddle) descriptor.