post.js example is outdated

1. Which version of PhantomJS are you using? Tip: run phantomjs --version.

2.1.1

1. What steps will reproduce the problem?

To reproduce:

1. Run phantomjs on phantomjs/examples/post.js

Expected result: a valid response. Actual response: 404 not found

1. Which operating system are you using?

OS X

1. Did you use binary PhantomJS or did you compile it from source?

Installed via homebrew

1. Please provide any additional information below.

Running it via postman also didn't work. My suspicion is that posttestserver.com itself has changed, and that the previously valid example no longer works.