Clarify build steps

README.md

@@ -56,12 +56,16 @@ _Yes!_ Stability's hosted deployment of StableStudio will remain [DreamStudio](h
 git clone https://github.com/Stability-AI/StableStudio
 ```
 
-2. Install yarn dependencies
+2. Install dependencies
 
 ```
 yarn install
 ```
 
+```
+cargo install tauri-cli
+```
+
 3. Build
 
 ```