HTTP2 optimization

Fast flush HTTP headers, push promise CSS.
Requires PHP 5.3+ due to anonymous function.
Do not load syles, scripts, and notifications for Ajax requests.
https://github.com/FreshRSS/FreshRSS/issues/1089

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 728204a38..4d3bb5c4c 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ We are a friendly community.
 * Light server running Linux or Windows
 	* It even works on Raspberry Pi 1 with response time under a second (tested with 150 feeds, 22k articles)
 * A web server: Apache2 (recommended), nginx, lighttpd (not tested on others)
-* PHP 5.2.1+ (PHP 5.3.7+ recommended, and PHP 5.5+ for performance) (beta support for PHP 7 with even higher performance)
+* PHP 5.3+ (PHP 5.3.7+ recommended, and PHP 5.5+ for performance, and PHP 7 for even higher performance)
 	* Required extensions: [PDO_MySQL](http://php.net/pdo-mysql) or [PDO_SQLite](http://php.net/pdo-sqlite), [cURL](http://php.net/curl), [GMP](http://php.net/gmp) (for API access on platforms < 64 bits), [IDN](http://php.net/intl.idn) (for Internationalized Domain Names)
 	* Recommended extensions: [iconv](http://php.net/iconv), [JSON](http://php.net/json), [mbstring](http://php.net/mbstring), [Zip](http://php.net/zip), [zlib](http://php.net/zlib)
 	* Enabled by default: [DOM](http://php.net/dom), [XML](http://php.net/xml)…