docs: Update README.md with hokulea's architecture explanation (#20)

README.md

@@ -1,6 +1,6 @@
 # Hokulea
 
-![](./hokulea.jpeg)
+Hokulea is a library to provide the altda providers for a derivation pipeline built with [kona](https://github.com/anton-rs/kona) to understand eigenDA blobs, following the [kona book](https://anton-rs.github.io/kona/sdk/pipeline/providers.html#implementing-a-custom-data-availability-provider) recommendation (also see this [comment](https://github.com/anton-rs/kona/pull/862#issuecomment-2515038089)).
 
 ### Running against devnet
 
@@ -14,4 +14,6 @@ Then run hokulea:
 ```bash
 cd bin/client
 just run-client-native-against-devnet
-```
+```
+
+![](./hokulea.jpeg)