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docs/contributing.md

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+All contributions to *ormar* are welcomed!
+
+## Issues
+
+To make it as simple as possible for us to help you, please include the following:
+
+*  OS 
+*  python version
+*  ormar version
+*  database backend (mysql, sqlite or postgresql)
+
+Please try to always include the above unless you're unable to install *ormar* or **know** it's not relevant
+to your question or feature request.
+
+## Pull Requests
+
+It should be quite straight forward to get started and create a Pull Request.
+
+!!! note
+    Unless your change is trivial (typo, docs tweak etc.), please create an issue to discuss the change before
+    creating a pull request.
+
+To make contributing as easy and fast as possible, you'll want to run tests and linting locally. 
+
+You'll need to have **python 3.6**, **3.7**, or **3.8**, **virtualenv**, and **git** installed.
+
+```bash
+# 1. clone your fork and cd into the repo directory
+git clone git@github.com:<your username>/ormar.git
+cd ormar
+
+# 2. Set up a virtualenv for running tests
+virtualenv -p `which python3.7` env
+source env/bin/activate
+# (or however you prefer to setup a python environment, 3.6 will work too)
+
+# 3. Install ormar, dependencies and test dependencies
+pip install -r requirements.txt
+
+# 4. Checkout a new branch and make your changes
+git checkout -b my-new-feature-branch
+# make your changes...
+
+# 5. Formatting and linting
+# ormar uses black for formatting, flake8 for linting and mypy for type hints check
+# run all of the following as all those calls will be run on travis after every push
+black ormar
+flake8 ormar
+mypy --config-file mypy.ini ormar
+
+# 6. Run tests
+# on localhost all tests are run against sglite backend
+# rest of the backends will be checked after push
+pytest -svv --cov=ormar --cov=tests --cov-fail-under=100 --cov-report=term-missing
+
+# 7. Build documentation
+mkdocs build
+# if you have changed the documentation make sure it builds successfully
+# you can also use `mkdocs serve` to serve the documentation at localhost:8000
+
+# ... commit, push, and create your pull request
+```