Migrate to GitHub Actions (#7)

* Migrate to GitHub Actions and update installation instructions.

* Update README.md

Author: thomashoneyman

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: purescript-contrib/setup-purescript@main
+
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "10"
+
+      - name: Install dependencies
+        run: |
+          npm install -g bower
+          npm install
+          bower install --production
+
+      - name: Build source
+        run: npm run-script build
+
+      - name: Run tests
+        run: |
+          bower install
+          npm run-script test --if-present

.travis.yml

@@ -1,15 +1,17 @@
 # purescript-web-dom-parser
 
-[`DOMParser`](https://developer.mozilla.org/docs/Web/API/DOMParser) wrapper for integration with PureScript DOM. This is a fork of [purescript-dom-parser](https://github.com/toastal/purescript-dom-parser), using `Effect`.
-
-
 [![Latest release](http://img.shields.io/github/release/purescript-web/purescript-web-dom-parser.svg)](https://github.com/purescript-web/purescript-web-dom-parser/releases)
+[![Build status](https://github.com/purescript/purescript-web-dom-parser/workflows/CI/badge.svg?branch=master)](https://github.com/purescript/purescript-web-dom-parser/actions?query=workflow%3ACI+branch%3Amaster)
+[![Pursuit](https://pursuit.purescript.org/packages/purescript-web-dom-parser/badge)](https://pursuit.purescript.org/packages/purescript-web-dom-parser)
 
+[`DOMParser`](https://developer.mozilla.org/docs/Web/API/DOMParser) wrapper for integration with PureScript DOM. This is a fork of [purescript-dom-parser](https://github.com/toastal/purescript-dom-parser), using `Effect`.
 
 ## Installation
 
 ```bash
-bower install purescript-web-dom-parser
+spago install web-dom-parser
 ```
 
+## Documentation
+
 Module documentation is [published on Pursuit](https://pursuit.purescript.org/packages/purescript-web-dom-parser).