fix(docs): remove git clone from npm installation instructions

Replace repository cloning steps with proper npm package installation. Users can now install globally via npm or use npx directly, which aligns with the npx configuration example.

Author: richyBaxter

README.md

@@ -67,15 +67,14 @@ Generate responsive HTML components using houtini-lm for a pricing card with dar
 
 ## Installation
 
-### 1. Install Dependencies
+### 1. Install the Package
 
 ```bash
-# Clone the repository
-git clone https://github.com/houtini-ai/lm.git
-cd lm
+# Install globally via npm
+npm install -g @houtini/lm
 
-# Install Node.js dependencies
-npm install
+# Or use npx (no installation required)
+npx @houtini/lm
 ```
 
 ### 2. Configure Claude Desktop