Web build should be used in Pages

Fixes #161

.github/workflows/publish.yml

@@ -0,0 +1,20 @@
+name: Publish to GitHub Pages
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: beta
+      - run: flutter pub get
+      - run: flutter test
+      - uses: bluefireteam/flutter-gh-pages@v7
+        with:
+          workingDir: example

example/.gitignore

@@ -32,7 +32,6 @@
 /build/
 
 # Web related
-lib/generated_plugin_registrant.dart
 
 # Symbolication related
 app.*.symbols