docs: Enhance README.md with detailed prerequisites and MCP server configuration example

Author: Pradumnasaraf

README.md

@@ -8,6 +8,28 @@ Aviationstack MCP is a Model Context Protocol (MCP) server for the Aviationstack
 
 ### Prerequisites
 
-- Aviationstack API Key
+- Aviationstack API Key (You can get a FREE API Key from [Aviationstack](https://aviationstack.com/signup/free))
 - Python 3.10 or newer
-- uv package manager: 
+- uv package manager: 
+
+### MCP Server configuration
+
+```json
+{
+  "mcpServers": {
+    "Aviationstack MCP": {
+      "command": "uv",
+      "args": [
+        "run",
+        "--with",
+        "mcp[cli],requests",
+        "mcp",
+        "run",
+        "/path/to/your/server.py"
+      ],
+      "env": {
+        "AVIATION_STACK_API_KEY": "<your-api-key>"
+      }
+    }
+  }
+}