diff --git a/README.md b/README.md
index 3144a6e..b06eea8 100644
--- a/README.md
+++ b/README.md
@@ -51,8 +51,9 @@ RSS-Bridge hashtag (#rss-bridge) search on Twitter, in ATOM format (as displayed
 Requirements
 ===
 
- * PHP 5.6
+ * PHP 5.6, e.g. `AddHandler application/x-httpd-php56 .php` in `.htaccess`
  * `openssl` extension enabled in PHP config (`php.ini`)
+ * `allow_url_fopen=1` in `php.ini`
 
 Enabling/Disabling bridges
 ===
diff --git a/cache/.gitkeep b/cache/.gitkeep
new file mode 100644
index 0000000..e69de29