README edits and .gitignore

Author: dandavison

.gitignore

@@ -1 +1,2 @@
 __pycache__/
+*.egg-info/

README.md

@@ -99,7 +99,7 @@ class CalculatorHandler:
         return CalculateResponse(result=result)
 ```
 
-### 4. Create a Nexus namespace and endpoint
+### 4. Create a namespace and Nexus endpoint
 
 **Local dev or self hosted deployment**
 
@@ -144,6 +144,10 @@ async def main():
 
 ### 4. Set Up the MCP Gateway
 
+```bash
+temporal operator namespace create --namespace my-caller-namespace
+```
+
 ```python
 import asyncio
 from mcp.server.lowlevel import NotificationOptions, Server
@@ -191,7 +195,7 @@ Add to your MCP client configuration (e.g., Claude Desktop):
 }
 ```
 
-### 6. Make MCP calls from a Temporal workflow
+### 6. Make MCP calls from a Temporal Workflow
 
 ```python
 import asyncio