How to download and setup updater
Open terminal and run command
                                            git clone https://github.com/flaviotordini/updater.git
                                        
                                        git clone is used to create a copy or clone of updater repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with updater https://github.com/flaviotordini/updater/archive/master.zip
Or simply clone updater with SSH
                                            [email protected]:flaviotordini/updater.git                                    
                                    If you have some problems with updater
You may open issue on updater support forum (system) here: https://github.com/flaviotordini/updater/issuesSimilar to updater repositories
Here you may see updater alternatives and analogs
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