Fix examples in README

[mikekistler]

Motivation and Context

The current samples in the README do not work and do not even build successfully.

How Has This Been Tested?

The new code is copied from a project that has been tested with the MCP Inspector tool.

Breaking Changes

No breaking changes.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

[mikekistler]

I've converted this to a draft as there are still some problems with the second example. Specifically, I'm getting errors that look like this in the terminal window where I launched the inspector:

Error from MCP server: SyntaxError: Unexpected token '/', "/usr/local"... is not valid JSON
    at JSON.parse (<anonymous>)
    at deserializeMessage (file:///Users/mikekistler/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/shared/stdio.js:26:44)
    at ReadBuffer.readMessage (file:///Users/mikekistler/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/shared/stdio.js:19:16)
    at StdioClientTransport.processReadBuffer (file:///Users/mikekistler/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/client/stdio.js:114:50)
    at Socket.<anonymous> (file:///Users/mikekistler/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/client/stdio.js:93:22)
    at Socket.emit (node:events:518:28)
    at addChunk (node:internal/streams/readable:561:12)
    at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)
    at Readable.push (node:internal/streams/readable:392:5)
    at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)

Also, these same examples appear in the src/ModelContextProtocol/README.md file. We should decide if we need the same examples both places or if we could only put them in one file and reference them from the other. If we decide to keep them in both files then the other file will need to be fixed as well.

[stephentoub]

@mikekistler, I think your local repo needs to be sync'd. The readme you're editing has already progressed further in main, and the one in the src/mpc folder was already deleted.

(Also, fwiw, all the further issues I found in the readme are fixed in #126, but as that hasn't been merged yet, feel free to make changes separately.)

[mikekistler]

Thanks @stephentoub ... I will wait for you to merge #126 and then fixup this PR to anything still missing.

[stephentoub]

@mikekistler, my changes merged. Can you update your PR with whatever additional changes you'd like on top of that?