feat(Docs): add contributing guide #128

	# src: https://gist.github.com/rodydavis/bde9a9a8c2fcdcf3474c0f50248f2e3a

	name: Flutter Build

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	# Cancel jobs and just run the last one
	concurrency:
	group: ${{ github.head_ref }}-build
	cancel-in-progress: true

	defaults:
	run:
	working-directory: example/

	jobs:
	build_ios:
	name: Build iOS
	runs-on: macOS-latest
	steps:
	- uses: actions/checkout@v1
	- uses: actions/setup-java@v1
	with:
	java-version: '12.x'
	- uses: subosito/flutter-action@v2
	with:
	flutter-version: '2.8.1'
	channel: 'stable'
	cache: true
	cache-key: flutter # optional, change this to force refresh cache
	cache-path: ${{ runner.tool_cache }}/flutter # optional, change this to specify the cache path

	- run: flutter pub get
	- run: flutter build ios --release --no-codesign

	build_android:
	name: Build Android
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v1
	- uses: actions/setup-java@v1
	with:
	java-version: '12.x'
	- uses: subosito/flutter-action@v2
	with:
	flutter-version: '2.8.1'
	channel: 'stable'
	cache: true
	cache-key: flutter # optional, change this to force refresh cache
	cache-path: ${{ runner.tool_cache }}/flutter # optional, change this to specify the cache path

	- run: flutter pub get
	- run: flutter build appbundle

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