ci: replace travis with GitHub Actions (#53)

* ci: remove travis

* ci(actions): test workflow

* ci(actions): release workflow

* ci(actions): update-prettier workflow

* docs(README): build status badge

.github/workflows/release.yml

@@ -0,0 +1,24 @@
+name: Release
+on:
+  push:
+    branches:
+      - master
+      - next
+      - beta
+      - "*.x" # maintenance releases
+
+jobs:
+  release:
+    name: release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: npm ci
+      - run: npm run build
+      - run: npx semantic-release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+name: Test
+on:
+  push:
+    branches:
+      - master
+      - "greenkeeper/**"
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node_version: [10, 12, 14]
+
+    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
+        run: npm ci
+      - name: Test
+        run: npm test

.github/workflows/update-prettier.yml

@@ -0,0 +1,23 @@
+name: Update Prettier
+on:
+  push:
+    branches:
+      - "greenkeeper/prettier-*"
+jobs:
+  update_prettier:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: npm ci
+      - run: npm run lint:fix
+      - uses: gr2m/create-or-update-pull-request-action@v1.x
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          title: "Prettier updated"
+          body: "An update to prettier required updates to your code."
+          branch: ${{ github.ref }}
+          commit-message: "style: prettier"

README.md

@@ -3,7 +3,7 @@
 > Get a user agent string in both browser and node
 
 [![@latest](https://img.shields.io/npm/v/universal-user-agent.svg)](https://www.npmjs.com/package/universal-user-agent)
-[![Build Status](https://travis-ci.com/gr2m/universal-user-agent.svg?branch=master)](https://travis-ci.com/gr2m/universal-user-agent)
+[![Build Status](https://github.com/gr2m/universal-user-agent/workflows/Test/badge.svg)](https://github.com/gr2m/universal-user-agent/actions?query=workflow%3ATest+branch%3Amaster)
 [![Greenkeeper](https://badges.greenkeeper.io/gr2m/universal-user-agent.svg)](https://greenkeeper.io/)
 
 ```js