initial draft, for discussion

CONTRIBUTING.md

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+## How to contribute to the OBO Repository
+
+Thank you for taking the time to contribute. We appreciate it!
+
+There are two ways to contribute to this effort. The first way is to use this project's [Issues Page](https://github.com/OBOFoundry/OBOFoundry.github.io/issues), which we use as a forum to discuss both major and minor issues related to developing the OBO repository, procedures and associated web interface. Examples of the type of issues that can be submitted are:
+
+ * Issues to do with the website and other technical issues
+ * Issues relating to metadata about individual ontologies
+ * Issues regarding OBO as a whole
+
+Please refer to the FAQ section [faq/how-do-i-edit-metadata.md](faq/how-do-i-edit-metadata.md) on making Pull Requests.
+
+
+<a name="issue_resolution"></a>
+## Issue Resolution
+
+Once a pull request or issue have been submitted, anyone can comment or vote on an issue to express their opinion following the Apache voting system. Quick summary:
+
+- **+1** something you agree with
+- **-1** if you have a strong objection to an issue, which will be taken very seriously. A -1 vote should provide an alternative solution.
+- **+0** or **-0** for neutral comments or weak opinions.
+- It's okay to have input without voting
+- Silence gives assent
+
+A pull request with at least two **+1** votes, no **-1** votes, and that has been open for at least 3 days, is ready to be merged. The merge should be done by someone from a different organization than the submitter. (We sometimes waive the 3 days for cosmetic-only changes -- use good judgment.)
+
+If an issue gets any **-1** votes, the comments on the issue need to reach consensus before the issue can be resolved one way or the other. There isn't any strict time limit on a contentious issue.
+
+The project will strive for full consensus on everything until it runs into a problem with that model.
+