[PHP-WEBMASTER] Add event PHP Experience 2017 (March, 27-28 - São Paulo, Brazil)

[Rogerio Prado de Jesus]

Hi,

We from PHPSP UG would like to add event PHP Experience 2017 (March, 27-28
- São Paulo, Brazil) in Conference list.

There's already a Pull Request open with information on
https://github.com/php/web-php/pull/143.

Thanks in advance,

Rogerio