Integrate Codizy into PHP Buildpack

Hi,

We've created a fork which integrate all the needed environment to run Codizy.
Codizy is a SAAS application built to optimize PHP/MySQL applications.

Our solution proposes 4 main features :

- Monitoring
- Analysis
- Profiling
- Optimization

Would it be possible to merge it into the official buildpack ? If Codizy is not used, the dependencies shouldn't have any effect, but add extra functionalities : basically, in addition to the Codizy specific codizy.so module, we add xhprof.so module and ioncube loader module.

Thanks and regards,
  Jocelyn Fournier
I'd prefer to have any docs related to the build pack extension included in the docs directory in markdown format.  That way they can be edited going forward.  If you've got product documentation in PDF format, just link to it from the build pack extension docs.

To expand on what documentation would be appropriate for including with the build pack:
  - include docs on any configuration settings which apply to your extension
  - include docs on how to use your extension (i.e. what steps does a dev need to take to enable the functionality added by your extension).
  - links to existing product documentation
  - links to an example app that demonstrates how to use the extension (if appropriate)