Update who.md

docs: added community section around memberships

www/about/who.md

@@ -4,3 +4,20 @@ In the wake of the post-third-party-script era, publishers faced a critical need
 
 Aimed at standardizing the buying process across direct and programmatic channels, there was a clear need for full industry collaboration. Advantage was gifted to the industry by Madington in April 2024 and perfected by community collaboration ever since.
 
+# Community 
+As a open-source project we invite contributions from the industry, controbutions can be done on different levels: 
+
+- **Maintainer:** Maintains the project, reviews contibutions and ensures they follow the code of conduct of the project 
+- **Contribute:** Contributes in terms of feedback, development time or documentations and standardization, read more here for [contributions](https://madington.github.io/advantage/about/contributions.html) 
+- **Supporting Member:** Supports the initiative, can be done by fx. implementing the technology or buying using the strandard 
+
+You can join as a supporting member for free, supporting membership means your brand endorses our efforts to standardize high-impact creative buying and delivery or has implemented the advanatge technology. 
+
+To join our community contact: community@getadvanatge.org 
+
+# Maintainers 
+Madington.com 
+TV.no 
+
+# Members 
+