Use bash format in README

README.md

@@ -8,37 +8,37 @@
 
 ## Build (browser)
 Build wasm package (this will create `pkg` folder):
-```shell
+```bash
 wasm-pack build
 ```
 
 Install `npm` dependencies for local development server:
-```shell
+```bash
 cd www
 npm install
 ```
 
 Open a new terminal to run de development server. Running the server in a new terminal lets us leave it running in the background, and doesn't block us from running other commands in the meantime. In the new terminal, run this command from the `www` folder:
 
-```shell
+```bash
 npm run start
 ```
 
 Navigate your Web browser to http://localhost:8080/ 
 
 ## Build (nodejs)
 Build wasm package for `nodejs` (this will create `node/pkg` folder):
-```shell
+```bash
 wasm-pack build --target nodejs --out-dir node/pkg
 ```
 
 Install `npm` dependencies:
-```shell
+```bash
 cd node
 npm install
 ```
 
 Run `wasm-hasher` from `node` folder:
-```shell
+```bash
 node run-hasher.js
 ```