Add info and link to CoC

Author: prushforth

Diff for: README.md

@@ -46,15 +46,23 @@ OR inline content
 See [CONTRIBUTING](https://github.com/Maps4HTML/MapML.js/blob/main/CONTRIBUTING.md#contributing-to-mapml) for details, but generally:
 
 0. Join our [Community Group](https://www.w3.org/community/wp-login.php?redirect_to=%2Fcommunity%2Fmaps4html%2Fjoin)
-1. Fork it!
-2. Create your feature branch: `git checkout -b my-new-feature`
-3. Commit your changes: `git commit -am 'Add some feature'`
-4. Push to the branch: `git push origin my-new-feature`
-5. Submit a pull request :D
+1. Discuss your proposed changes or requirements in a GitHub issue in maps4html organization
+2. Once agreement is reached on your ideas, fork it!
+3. Create your feature branch: `git checkout -b my-new-feature`
+4. Commit your changes: `git commit -am 'Add some feature'`
+5. Push to the branch: `git push origin my-new-feature`
+6. Submit a pull request :D
+7. Iterate as required.
 
 ## History
 
-TODO: Write history
+The idea of standardizing maps in the web platform arose from discussions at a 
+W3C linking spatial data workshop in 2014.  A second 
+online workshop focused on maps for the web was held in 2020, and from the latter,
+many detailed requirements for maps on the web were presented.  The MapML 
+polyfill attempts to track and implement these (evolving) requirements, with the
+intent being to eventually fully specify and the requirements of web map
+users as an update to the HTML Living Standard, implemented by browsers.
 
 ## Credits
 
@@ -63,6 +71,13 @@ Map for HTML Community members and supporters past, present and future.
 ## License
 
 All Reports in this Repository are licensed by Contributors under the 
-[W3C Software and Document License](http://www.w3.org/Consortium/Legal/2015/copyright-software-and-document).  
+[W3C Software and Document License](https://www.w3.org/copyright/software-license-2023/).  
 Contributions to Specifications are made under the
 [W3C CLA](https://www.w3.org/community/about/agreements/cla/).
+
+
+## Code of Conduct
+[Professional conduct](https://www.w3.org/policies/code-of-conduct/) on the part 
+of our members is required and expected by our
+status as a project of the 
+[W3C Community and Business Groups program](https://www.w3.org/community/about/).