Update uniffi-rs to 0.16.0

Cargo.toml

@@ -12,7 +12,7 @@ name = "bdkffi"
 [dependencies]
 bdk = { version = "0.13", features = ["all-keys", "use-esplora-ureq"] }
 uniffi_macros = "0.14.1"
-uniffi = "0.14.1"
+uniffi = "0.16.0"
 thiserror = "1.0"
 anyhow = "=1.0.45" # remove after upgrading to next version of uniffi
 

README.md

@@ -30,6 +30,14 @@ language binding for [bdk] supported by this project.
 
 ## Contributing
 
+### Install uniffi-bindgen cli tool
+
+Install the uniffi-bindgen binary on your system using:
+
+`cargo install uniffi_bindgen`
+
+The version must be the same as the `uniffi` dependency in `Cargo.toml`.
+
 ### Adding new structs and functions
 
 See the [UniFFI User Guide](https://mozilla.github.io/uniffi-rs/)