Basic contributing.md

Inspiration taken from Metasploit's amazing page.

CONTRIBUTING.md

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+# Hi there
+
+Thanks for your interest in making the Monkey -- and therefore, your network -- a better place!
+
+Are you about to report a bug? Sorry to hear it. Here's our [Issue tracker].
+Please try to be as specific as you can about your problem; try to include steps
+to reproduce. While we'll try to help anyway, focusing us will help us help you faster.
+
+If you want to contribute new code or fix bugs..
+
+
+## Submitting code
+
+The following is a *short* list of recommendations. PRs that don't match these criteria won't be closed but it'll be harder to merge the changes into the code.
+
+* **Do** stick to [PEP8](https://www.python.org/dev/peps/pep-0008/).
+* **Do** target your pull request to the **develop branch**. 
+* **Do** specify a descriptive title to make searching for your pull request easier.
+* **Do** list verification steps so your code is testable.
+* **Don't** leave your pull request description blank.
+* **Do** license your code as GPLv3.
+
+
+
+## Issues
+* **Do** write a detailed description of your bug and use a descriptive title.
+* **Do** include reproduction steps, stack traces, and anything else that might help us verify and fix your bug.
+
+Thank you for reading this before opening an issue or a PR, you've already doing good!