Update README

README.md

@@ -1,4 +1,18 @@
 # halo2ccs
 Convert a Plonkish circuit in [Halo2](https://zcash.github.io/halo2/) into a [CCS](https://eprint.iacr.org/2023/552) circuit in [sonobe](https://github.com/privacy-scaling-explorations/sonobe).
 
-[rustdoc](https://pnyda.github.io/halo2ccs)
+[rustdoc](https://pnyda.github.io/halo2-ccs-plus/halo2ccs)
+
+This crate works on [my fork of halo2](https://github.com/pnyda/halo2/tree/ccs) because some of the private members needed to be accessible from external crate. If you wish to convert your circuit you have to add to Cargo.toml
+```toml
+[dependencies]
+halo2_proofs = { git = "https://github.com/pnyda/halo2.git", branch = "ccs" }
+halo2_gadgets = { git = "https://github.com/pnyda/halo2.git", branch = "ccs" }
+```
+
+If you need to switch dependencies of dependencies at once then you can use:
+```toml
+[patch.crates-io]
+halo2_proofs = { git = "https://github.com/pnyda/halo2.git", branch = "ccs" }
+halo2_gadgets = { git = "https://github.com/pnyda/halo2.git", branch = "ccs" }
+```