fixes

.gitignore

@@ -2,6 +2,7 @@
 # will have compiled files and executables
 debug/
 target/
+pkg/
 
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
@@ -11,4 +12,4 @@ target/
 **/*.rs.bk
 
 # MSVC Windows builds of rustc generate these, which store debugging information
-*.pdb
+*.pdb

README.md

@@ -17,6 +17,17 @@ cargo run --release --bin swiftness --features starknet_with_keccak,keccak --no-
 cargo test
 ```
 
+### Install wasm-pack
+```sh
+cargo install wasm-pack
+```
+
+### Build WASM:
+
+```sh
+cd wasm-binding && wasm-pack build --target bundler --workspace --features starknet_with_keccak,blake2s --no-default-features
+```
+
 ## Features
 
 - **Usage:**