Update README.md

web/README.md

@@ -3,11 +3,17 @@ The paper wallet generator [is hosted at paper.zecwallet.co](https://paper.zecwa
 
 This is a web version of the Zec Sapling Paper Wallet generator. It's mainly for illustrative purposes. If you want to generate a serious offline paper wallet, you should run [zecpaperwallet](https://github.com/adityapk00/zecpaperwallet) offline. 
 
-### Running locally
+## Installing wasm-pack
 You can run the web wallet locally. You need to install the following first:
-1. Rust 1.32+
-2. wasm-build
-3. nodejs / npm 
+1. [Rust 1.32+](https://www.rust-lang.org/tools/install)
+2. [nodejs / npm](https://www.npmjs.com/get-npm)
+3. wasm-pack
+```
+cargo install wasm-pack
+```
+
+### Running locally
+You can run the web wallet locally.
 
 ```
 cd zecpaperwallet/web
@@ -17,4 +23,4 @@ npm install
 npm run start
 ```
 
-This will start a local web server at `localhost:8080` where you can access the paper wallet
+This will start a local web server at `localhost:8080` where you can access the paper wallet