Provide an easy way to build from sources

[yac]

This is discussed in #1

Making each potential contributor set up his/hers IDE/build system is a huge block. Please integrate build system of your choice into the source repository.

My reccommendation would be gradle which I already tested thanks to JamieMagee@cc8c957 as disccussed in in #1 . Anything that works with one terminal command is fine, really - you're the boss here.

[phr00t]

JamieMagee already forked the project & made it into a gradle project. There is another fork that mavenized the project. I don't use either for AutoStepper, so I haven't been planning on changing this project structure.