update README (#21)

Update the README for easier rampup

Author: nlu90

README.md

@@ -56,7 +56,7 @@ If you want to access to your StreamNative Cloud, you will need to have followin
 
 ```bash
 # Start MCP server with StreamNative Cloud authentication
-snmcp stdio --organization my-org --key-file /path/to/key-file.json
+bin/snmcp stdio --organization my-org --key-file /path/to/key-file.json
 
 # Start MCP server with external Kafka
 bin/snmcp stdio --use-external-kafka --kafka-bootstrap-servers localhost:9092 --kafka-auth-type SASL_SSL --kafka-auth-mechanism PLAIN --kafka-auth-user user --kafka-auth-pass pass --kafka-use-tls --kafka-schema-registry-url https://sr.local --kafka-schema-registry-auth-user user --kafka-schema-registry-auth-pass pass
@@ -165,7 +165,7 @@ To enable only specific feature sets:
 
 ```bash
 # Enable only Pulsar client features
-snmcp stdio --organization my-org --key-file /path/to/key-file.json --features pulsar-client
+bin/snmcp stdio --organization my-org --key-file /path/to/key-file.json --features pulsar-client
 ```
 
 ## Integration with MCP Clients
@@ -176,25 +176,31 @@ This server can be used with any MCP-compatible client, such as:
 - Other AI assistants supporting the MCP protocol
 - Custom applications built with MCP client libraries
 
+> ⚠️ Reminder: Please ensure you have an active paid plan with your LLM provider to fully utilize the MCP server.
+Without it, you may encounter the error: `message will exceed the length limit for this chat`.
+
+
 ### Usage with Claude Desktop
 
 ```json
 {
   "mcpServers": {
-    "github": {
-      "command": "snmcp",
+    "snmcp": {
+      "command": "${PATH_TO_SNMCP}/bin/snmcp",
       "args": [
         "stdio",
         "--organization",
-        "my-org",
+        "${STREAMNATIVE_CLOUD_ORGANIZATION_ID}",
         "--key-file",
-        "/path/to/key-file.json"
-      ],
+        "${STREAMNATIVE_CLOUD_KEY_FILE}"
+      ]
     }
   }
 }
 ```
 
+Please remember to replace `${PATH_TO_SNMCP}` with the actual path to the `snmcp` binary and `${STREAMNATIVE_CLOUD_ORGANIZATION_ID}` and `${STREAMNATIVE_CLOUD_KEY_FILE}` with your StreamNative Cloud organization ID and key file path, respectively.
+
 ## About Model Context Protocol (MCP)
 
 The Model Context Protocol (MCP) is an open protocol that standardizes how applications provide context to LLMs. MCP helps build agents and complex workflows on top of LLMs by providing: