add a doc that covers Amundsen (#458)

README.md

@@ -139,6 +139,7 @@ Please visit [Roadmap](https://github.com/lyft/amundsen/blob/master/docs/roadmap
 - [Governance and Discovery](https://www.oreilly.com/radar/governance-and-discovery/)
 - [A Data Engineer’s Perspective On Data Democratization](https://towardsdatascience.com/a-data-engineers-perspective-on-data-democratization-a8aed10f4253?source=friends_link&sk=63638570d03e4145265932c12af33f9d)
 - [Data Discovery in 2020](https://medium.com/@torokyle/data-discovery-in-2020-3c907383caa0)
+- [Graph Technology Landscape 2020](https://graphaware.com/graphaware/2020/02/17/graph-technology-landscape-2020.html)
 
 ## Community meetings
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