Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -4,7 +4,10 @@ Contributing to ProgLearn
 (adopted from scikit-learn)
 
 The latest contributing guide is available in the repository at
-`docs/contributing.rst`
+`docs/contributing.rst`, or online at:
+
+[https://proglearn.neurodata.io/contributing.html](https://proglearn.neurodata.io/contributing.html)
+
 
 There are many ways to contribute to ProgLearn, with the most common ones
 being contribution of code or documentation to the project. Improving the
@@ -23,6 +26,13 @@ up" on issues that others reported and that are relevant to you. It also helps
 us if you spread the word: reference the project from your blog and articles,
 link to it from your website, or simply star it in GitHub to say "I use it".
 
+Quick links
+-----------
+
+* [Submitting a bug report or feature request](http://proglearn.neurodata.io/contributing.html#submitting-a-bug-report-or-a-feature-request)
+* [Contributing code](http://proglearn.neurodata.io/contributing.html#contributing-code)
+* [Coding guidelines](http://proglearn.neurodata.io/contributing.html#coding-guidelines)
+
 Code of Conduct
 ---------------