Update and rename CONTRIBUTING.md to doc/src/contribute/index.md (Mys…

…tenLabs#782)

* Update and rename CONTRIBUTING.md to doc/src/contribute/index.md

Repurpose existing CONTRIBUTING page as the Contribute section landing page
Add sub- and related pages to bottom for further reading

* Update index.md

Fix title entry

* Update index.md

Fix white paper link

* Update index.md

Moving Logging to Contribute

CONTRIBUTING.md → doc/src/contribute/index.md

@@ -1,6 +1,6 @@
-## Contributing to Sui
-
-TODO: Define basic system requirements for a reliable environment: recommended OS and required packages.
+---
+title: Contributing to Sui
+---
 
 To contribute, ensure you have the latest version of the codebase. To clone the repository, run the following:
 ```bash
@@ -9,12 +9,6 @@ cd sui
 cargo build --all --all-targets
 cargo test
 ```
-TODO: Note the `git clone` command above may fail with the following error, which *should* go away when we open our repo up:
-
-```
-remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.
-remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.
-```
 
 ## Pull requests
 
@@ -28,4 +22,10 @@ To submit your pull request:
 6. Complete the Contributor License Agreement (CLA), if you haven't already done so.
 7. Submit your pull request.
 
-TODO: Add links to the steps above for more details, such as how to build and test the dev site and where to find the CLA once we have one.
+## Further reading
+
+* Learn [about Mysten Labs](https://mystenlabs.com/) the company on our public site.
+* Read the [Sui Smart Contract Platform](../../paper/sui.pdf) white paper.
+* * Implementing [logging](observability.md) in Sui to observe the behavior of your development.
+* Find related [research papers](research-papers.md).
+* See and adhere to our [code of conduct](code-of-conduct.md).