[CI] Migrate to GitHub Actions (#395)

* Add workflow file

* Remove Travis / AppVeyor config

* Update README.md

.github/workflows/main.yml

@@ -0,0 +1,43 @@
+name: CI
+
+on: [push]
+
+jobs:
+  build-test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macOS-10.14, ubuntu-18.04]
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 9.x
+      - name: CI
+        run: |
+          if [[ "$OSTYPE" == "linux-gnu" ]]; then
+            export DISPLAY=:99.0
+            Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
+          fi
+          npm i -g xvfb-maybe
+          yarn
+          cd npm-package && yarn && cd ..
+          yarn lint
+          yarn test
+          yarn build
+          xvfb-maybe yarn test-e2e
+  build-test-windows:
+    runs-on: windows-2019
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 9.x
+      - name: CI
+        run: |
+          yarn
+          cd npm-package && yarn && cd ..
+          yarn lint
+          yarn build
+          yarn test
+          yarn test-e2e

README.md

@@ -1,6 +1,6 @@
 # React Native Debugger
 
-[![Backers on Open Collective](https://opencollective.com/react-native-debugger/backers/badge.svg)](#backers) [![Sponsors on Open Collective](https://opencollective.com/react-native-debugger/sponsors/badge.svg)](#sponsors) [![Build Status](https://travis-ci.org/jhen0409/react-native-debugger.svg?branch=master)](https://travis-ci.org/jhen0409/react-native-debugger) [![Build status Windows](https://ci.appveyor.com/api/projects/status/botj7b3pj4hth6tn/branch/master?svg=true)](https://ci.appveyor.com/project/jhen0409/react-native-debugger) [![Dependency Status](https://david-dm.org/jhen0409/react-native-debugger.svg)](https://david-dm.org/jhen0409/react-native-debugger) [![devDependency Status](https://david-dm.org/jhen0409/react-native-debugger/dev-status.svg)](https://david-dm.org/jhen0409/react-native-debugger?type=dev)
+[![Backers on Open Collective](https://opencollective.com/react-native-debugger/backers/badge.svg)](#backers) [![Sponsors on Open Collective](https://opencollective.com/react-native-debugger/sponsors/badge.svg)](#sponsors) [![CI Status](https://github.com/jhen0409/react-native-debugger/workflows/CI/badge.svg)](https://github.com/jhen0409/react-native-debugger) [![Dependency Status](https://david-dm.org/jhen0409/react-native-debugger.svg)](https://david-dm.org/jhen0409/react-native-debugger) [![devDependency Status](https://david-dm.org/jhen0409/react-native-debugger/dev-status.svg)](https://david-dm.org/jhen0409/react-native-debugger?type=dev)
 
 ![React Native Debugger](https://user-images.githubusercontent.com/3001525/29451479-6621bf1a-83c8-11e7-8ebb-b4e98b1af91c.png)