Update virtPHP to v0.4.0-alpha
Upgrade php*-snappy to 0.1.0
Upgrade Codeception to 1.8.5
refactored with @lucasmichot advices (+1 squashed commit)
Squashed commits:
[27776ae] added formulas for installing yrmcds extension to php by home brew
Enable opcache by default but add libtool dependency
Updated PHP to 5.5.13, 5.4.29
update wp-cli to v0.15.1
Update php*-yar to version 1.2.3
Update PHPUnit to version 4.1.1

Closes #1174
Upgrade PHP 5.6 to 5.6.0 beta 4
codeception up to 2.0.0
php5*-phalcon: 1.3.2
Upgrade php*-mongo to 1.5.6
Upgrade php*-swoole to 1.7.2
Upgrade PHPUnit to 4.1.2
Use File.exist? instead of File.exists?

File.exists? is deprecated in Ruby 2.1+.
New virtphp version
Update PHPUnit to 4.1.3
Upgrade php*-apcu to 4.0.5
Upgrade php*-apcu to 4.0.6