stub for unsupported platforms does not cover probes used by name
Updating DTraceProviderStub stub to add 'disable'
createDTraceProvider use exported binding

You can replace the exported mechanism to allow for wrapping, but still
use the factory method
Syntax fix in README.md

`{ "foo" => "bar" }` -> `{ "foo": "bar" }`
error output should go to stderr
support paths that require escaping

Fixes #45