Fix readme flathub link #155

	name: CI

	# This workflow will run for any pull request or pushed commit
	on: [push, pull_request]

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "flatpak"
	flatpak:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# This job runs in a special container designed for building Flatpaks for AppCenter
	container:
	image: bilelmoussaoui/flatpak-github-actions:gnome-45
	options: --privileged

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so the job can access it
	- uses: actions/checkout@v2

	# Builds your flatpak manifest using the Flatpak Builder action
	- uses: bilelmoussaoui/flatpak-github-actions/flatpak-builder@v3
	with:
	# This is the name of the Bundle file we're building and can be anything you like
	bundle: Gradebook.flatpak
	# This uses your app's RDNN ID
	manifest-path: io.github.leolost2605.gradebook.json

	# You can automatically run any of the tests you've created as part of this workflow
	run-tests: true

	# These lines specify the location of the elementary Runtime and Sdk
	repository-name: flathub
	repository-url: https://dl.flathub.org/repo/flathub.flatpakrepo
	cache-key: "flatpak-builder-${{ github.sha }}"

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