Created Contributing.md

[21st-centuryman]

I was thinking we create a contributing.md file for better instructions for users, If there are any issues with this file I would love to fix it.

[Gobidev]

Thank you for making this, it is probably a good idea to have some contributing guidelines. I hope you understand but I would prefer to write these guidelines myself to make sure they allign with my idea of the direction of the project. There are also not that many PRs and issues that managing them has become an issue, so I want to keep the barrier for creating them as low as possible for now.

If you want to help out more you can take a look at #23 (implementing macports support for libmacchina), which would be pretty difficult for me to do because I don't own any devices that run macOS.

[21st-centuryman]

Yeah that's no problem. I was more just trying to make it easier for people to create new os support or otherwise. I understand you, keep up the great work with this project.

I'll look into the macports issue when I find the time. Happy Easter.