Link to code of conduct.

Author: jrleeman

CONTRIBUTING.md

@@ -45,7 +45,7 @@ for the project as well.
 
 ## Ground Rules
 The goal is to maintain a diverse community that's pleasant for everyone. Please
-be considerate and respectful of others. Other items:
+be considerate and respectful of others by following our [code of conduct](https://github.com/Unidata/MetPy/blob/master/CODE_OF_CONDUCT.md). Other items:
 
 * Each pull request should consist of a logical collection of changes. You can
   include multiple bug fixes in a single pull request, but they should be related.

README.rst

@@ -110,6 +110,13 @@ of the standard library enum module.
 There is also an optional dependency on the pyproj library for geographic
 projections (used with CDM interface).
 
+Code of Conduct
+---------------
+We want everyone to feel welcome to contribute to MetPy and participate in discussions. In that
+spirit please have a look at our `code of conduct`__.
+
+__ https://github.com/Unidata/MetPy/blob/master/CODE_OF_CONDUCT.md
+
 Contributing
 ------------
 **Imposter syndrome disclaimer**: We want your help. No, really.

docs/index.rst

@@ -91,6 +91,14 @@ MetPy is available under the terms of the open source `BSD 3 Clause license`__.
 
 __ https://raw.githubusercontent.com/Unidata/MetPy/master/LICENSE
 
+---------------
+Code of Conduct
+---------------
+We want everyone to feel welcome to contribute to MetPy and participate in discussions. In that
+spirit please have a look at our `code of conduct`__.
+
+__ https://github.com/Unidata/MetPy/blob/master/CODE_OF_CONDUCT.md
+
 ----------------
 Related Projects
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