Add php-curl package requirement

README.md

@@ -38,6 +38,7 @@ Simple PHP script which decodes an SSL connection and/or certificate and display
 - OpenSSL
 - PHP must allow shell_exec and remote fopen.
 - Debian: `php-intl` package installed.
+- `php5-curl` package
 
 ### Installation
 
@@ -619,4 +620,4 @@ Example response:
                 }
             }
         }
-    }
+    }