Add documentation.

.github/CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+nationality, personal appearance, race, religion, or sexual identity and
+orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at [code@pressbooks.com](mailto:code@pressbooks.com). All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: http://contributor-covenant.org
+[version]: http://contributor-covenant.org/version/1/4/

.github/CONTRIBUTING.md

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+# Contributing
+
+Issues related to the web, ebook and PDF output of books using this theme are welcomed on this repository. Issues related to general functionality of Pressbooks should be posted to [pressbooks/pressbooks](https://github.com/pressbooks/pressbooks). All contributions are subject to the [Contributor Code of Conduct](https://github.com/pressbooks/pressbooks-donham/blob/master/.github/CODE_OF_CONDUCT.md).

.github/ISSUE_TEMPLATE.md

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+### Prerequisites
+
+_Check the boxes below by changing them from `[ ]` to `[x]`._
+
+* [ ] Can you reproduce the behavior you wish to address with [all other plugins deactivated](http://codex.wordpress.org/Multisite_Network_Administration#Plugins)?
+* [ ] Are you running the [latest version of Pressbooks](http://github.com/pressbooks/pressbooks/releases/latest/) and the [latest version of WordPress](http://codex.wordpress.org/Upgrading_WordPress)?
+* [ ] Are you experiencing this issue with a book using this theme?
+* [ ] Did you [perform a cursory search](https://github.com/issues?q=+is%3Aissue+repo%3Apressbooks%2Fpressbooks) to see if your bug or enhancement is already listed?
+
+### Description
+
+[Description of the bug or feature]
+
+### Steps to Reproduce
+
+1. [First Step]
+2. [Second Step]
+3. [and so on...]
+
+**Expected behavior:** [What you expected to happen]
+
+**Actual behavior:** [What actually happened]
+
+### System Information
+
+_Enter the relevant information from the Diagnostics page, available at `https://<yourdomain.tld>/<yourbook>/wp-admin/options.php?page=pressbooks_diagnostics` or via the Diagnostics link in the admin footer._
+
+Book Theme: [Enter book theme name and version here]
+Pressbooks: [Enter Pressbooks version here]
+WordPress: [Enter WordPress version here]
+PHP: [Enter PHP version here]