This is a simple bootstrapper for Maven projects.
Just dump mvnbt.jar (and build.bat) into the root directory of any Maven project.
The only requirement is JDK 8. The project to build may still demand a higher version. Maven doesn't need to be pre-installed (which is the entire point of this).
Developers should remember to add *apache-maven-* to their .gitignore.
This tool is dedicated to the public domain. See https://creativecommons.org/publicdomain/zero/1.0/ for details.