first draft at a code of conduct

code_of_conduct.md

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+The community of participants in open source astrophysical simulations is
+made up of members from around the globe with a diverse set of skills,
+personalities, and experiences. It is through these differences that
+our community experiences success and continued growth. We expect
+everyone in our community to follow these guidelines when interacting
+with others both inside and outside of our community. Our goal is to
+keep ours a positive, inclusive, successful, and growing community.
+
+As members of the community,
+
+* We pledge to treat all people with respect and provide a harassment-
+  and bullying-free environment, regardless of sex, sexual orientation
+  and/or gender identity, disability, physical appearance, body size,
+  race, nationality, ethnicity, and religion. In particular, sexual
+  language and imagery, sexist, racist, or otherwise exclusionary
+  jokes are not appropriate.
+
+* We pledge to respect the work of others by recognizing
+  acknowledgment/citation requests of original authors. As authors, we
+  pledge to be explicit about how we want our own work to be cited or
+  acknowledged.
+
+* We pledge to welcome those interested in joining the community, and
+  realize that including people with a variety of opinions and
+  backgrounds will only serve to enrich our community. In particular,
+  discussions relating to pros/cons of various technologies,
+  programming languages, and so on are welcome, but these should be
+  done with respect, taking proactive measure to ensure that all
+  participants are heard and feel confident that they can freely
+  express their opinions.
+
+* We pledge to welcome questions and answer them respectfully, paying
+  particular attention to those new to the community. We pledge to
+  provide respectful criticisms and feedback in forums, especially in
+  discussion threads resulting from code contributions.
+
+* We pledge to be conscientious of the perceptions of the wider
+  community and to respond to criticism respectfully. We will strive
+  to model behaviors that encourage productive debate and
+  disagreement, both within our community and where we are
+  criticized. We will treat those outside our community with the same
+  respect as people within our community.
+
+* We pledge to help the entire community follow the code of conduct,
+  and to not remain silent when we see violations of the code of
+  conduct. We will take action when members of our community violate
+  this code such as contacting senior members of the organization (all
+  discussions will be treated with the strictest confidence) or
+  talking privately with the person.
+
+This code of conduct applies to all community situations online and
+offline, including mailing lists, forums, social media, conferences,
+meetings, associated social events, and one-to-one interactions.
+
+The AMReX-Astro code of conduct was adapted from the Astropy Community
+Code of Conduct.  Parts of this code of conduct have been adapted from
+the PSF code of conduct.
+
+----
+
+The Astropy Community Code of Conduct is licensed under a Creative
+Commons Attribution 4.0 International License, as are our
+modifications of it.