Add code of conduct.

Author: leonawicz

.Rbuildignore

@@ -21,3 +21,4 @@
 ^CRAN-RELEASE$
 ^README\.html$
 ^codemeta\.json$
+^CODE_OF_CONDUCT\.md$

CODE_OF_CONDUCT.md

@@ -0,0 +1,25 @@
+# Contributor Code of Conduct
+
+As contributors and maintainers of this project, we pledge to respect all people who 
+contribute through reporting issues, posting feature requests, updating documentation,
+submitting pull requests or patches, and other activities.
+
+We are committed to making participation in this project a harassment-free experience for
+everyone, regardless of level of experience, gender, gender identity and expression,
+sexual orientation, disability, personal appearance, body size, race, ethnicity, age, or religion.
+
+Examples of unacceptable behavior by participants include the use of sexual language or
+imagery, derogatory comments or personal attacks, trolling, public or private harassment,
+insults, or other unprofessional conduct.
+
+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. Project maintainers who do not follow the Code of Conduct may be removed 
+from the project team.
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by 
+opening an issue or contacting one or more of the project maintainers.
+
+This Code of Conduct is adapted from the Contributor Covenant 
+(https://www.contributor-covenant.org), version 1.0.0, available at 
+https://contributor-covenant.org/version/1/0/0/.

README.Rmd

@@ -215,3 +215,7 @@ The R-Music <a href="https://r-music.rbind.io/">blog</a> provides package introd
 ```{r cleanup, echo=FALSE}
 unlink("phrase.mid")
 ```
+
+---
+
+Please note that this project is released with a [Contributor Code of Conduct](https://leonawicz.github.io/tabr/CODE_OF_CONDUCT.html). By participating in this project you agree to abide by its terms.

README.md

@@ -377,3 +377,9 @@ provides package introductions and examples.
   - The [tuneR](https://CRAN.R-project.org/package=tuneR) package for
     analysis of music and speech by Uwe Ligges, Sebastian Krey, Olaf
     Mersmann, and Sarah Schnackenberg.
+
+-----
+
+Please note that this project is released with a [Contributor Code of
+Conduct](https://leonawicz.github.io/tabr/CODE_OF_CONDUCT.html). By
+participating in this project you agree to abide by its terms.

codemeta.json

@@ -226,6 +226,6 @@
     "music-notation"
   ],
   "relatedLink": "https://CRAN.R-project.org/package=tabr",
-  "fileSize": "283.526KB",
+  "fileSize": "283.623KB",
   "developmentStatus": "http://www.repostatus.org/#active"
 }