>>Why not use GitHub or one of the free competing tools? Or the Git tooling inside Visual Studio?
>
>The goal is to avoid Git related utility interfaces to deploy, for example. So, we would like to creat a script to automate the deployment towards a DEV server, for example, without having human intervention.

Grunt (config-oriented) or Gulp (code-oriented) both have git plug-ins. There's more to deploying than just one piece, so either gives you a way to handle all that needs to be handled.

Gulp is node.js based, and for code-minded folks probably a better fit. Plus of course node itself has a cajillion modules to accomplish tasks that might be relevant to deployment.

Hank