First of all, correctly configure the Flutter development environment on your machine, see https://flutter.dev/docs/get-started/install

- Clone this repository:
$ git clone https://github.com/felipecastrosales/xlo xlo

- Enter in directory:
$ cd xlo

- For install dependencies:
$ flutter pub get

- Run the app: 
$ flutter run

- Fork the project 

- Create a new branch with your changes:
$ git checkout -b my-feature

- Save your changes and create a commit message telling you what you did:
$ git commit -m "feature: My new feature"

- Submit your changes:
$ git push origin my-feature