How to download and setup Negotiation
Open terminal and run command
                                            git clone https://github.com/willdurand/Negotiation.git
                                        
                                        git clone is used to create a copy or clone of Negotiation 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 Negotiation https://github.com/willdurand/Negotiation/archive/master.zip
Or simply clone Negotiation with SSH
                                            [email protected]:willdurand/Negotiation.git                                    
                                    If you have some problems with Negotiation
You may open issue on Negotiation support forum (system) here: https://github.com/willdurand/Negotiation/issuesSimilar to Negotiation repositories
Here you may see Negotiation alternatives and analogs
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