[PHP-DOC] Contribute to Reflection extension

[Jaroslav Hanslik]

Hi,

Jakub Vrána asked me to contribute to the PHP documentation, especially 
to the Reflection extension. As one of the developers of the 
TokenReflection library 
(https://github.com/Andrewsville/PHP-Token-Reflection) and ApiGen 
(https://github.com/apigen/apigen) I think I know about this extension 
quite well and I can complete the documentation, add examples, etc.

Jaroslav Hanslík