Update to Apache Server Configs 2.7.0
Docs: Add information about PHP's built-in server

Ref: http://php.net/manual/en/features.commandline.webserver.php
Close: h5bp/html5-boilerplate#1569.
Merge branch 'master' of https://github.com/h5bp/html5-boilerplate into 404-centrify

Conflicts:
	CHANGELOG.md