Remove PHP 5.5 & 5.6 deprecated PECL extensions
Update doc to reflect actual PHP 5.6 version
Update README.md
Remove useless version in PHPUnit
Fix brew audit warning
Fix patch syntax
Fix patch syntax

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
php-code-sniffer: fix audit warning
php-cs-fixer: remove unnecessary init method

This method is defined and then immediately called, so we can just
inline the body.
Simplify formulae that depend on zookeeper

I fixed the zookeeper formula in core to always build the C libraries,
so we can simplify some things.
Upgrade php-mongo to 1.5.6
Upgrade php-graphdat to 1.0.3
Fix more patch syntax
Add HEAD url for composer
update pecl_http to 2.1.2
Merge remote-tracking branch 'upstream/master'