[Website] Add FASTDATA.io to "Powered By" (#2639)

* [Website] Add FASTDATA.io to "Powered By"
* Add language about plasma store
diff --git a/powered_by.md b/powered_by.md
index e1b8b17..a283bfe 100644
--- a/powered_by.md
+++ b/powered_by.md
@@ -120,6 +120,11 @@
   Falcon loads Arrow files using the Arrow JavaScript module. Since Arrow does
   not need to be parsed (like text-based formats like CSV and JSON), startup cost
   is significantly minimized.
+* **[FASTDATA.io][26]**: Plasma Engine (unrelated to Arrow's Plasma In-Memory
+  Object Store) exploits the massive parallel processing power of GPUs for
+  stream and batch processing. It supports Arrow as input and output, uses
+  Arrow internally to maximize performance, and can be used with existing
+  Apache Spark™ APIs.
 
 [1]: https://www.apache.org/foundation/marks/
 [2]: https://www.apache.org/foundation/marks/faq/
@@ -146,3 +151,4 @@
 [23]: https://github.com/jpmorganchase/perspective
 [24]: https://github.com/Paradigm4/accelerated_io_tools
 [25]: https://github.com/uwdata/falcon
+[25]: https://fastdata.io/