secureCookie config docs

Author: mberkowski

libs/README.md

@@ -16,5 +16,6 @@ CSRFProtector configuration
  - `jsPath`: location of the js file **relative** to `config.php`. <br>**Default:** `../js/csrfprotector.js`
  - `jsUrl`: **Absolute url** of the js file. (See [Setting up](https://github.com/mebjas/CSRF-Protector-PHP/wiki/Setting-up-CSRF-Protector-PHP-in-your-web-application) for more information)
  - `tokenLength`: length of csrfp token, Default `10`
+ - `secureCookie`: sets the "secure" HTTPS flag on the cookie. <br>**Default: `false`**
  - `disabledJavascriptMessage`: messaged to be shown if js is disabled (string)
  - `verifyGetFor`: regex rules for those urls for which csrfp validation should be enabled for `GET` requests also. (View [verifyGetFor rules](https://github.com/mebjas/CSRF-Protector-PHP/wiki/verifyGetFor-rules) for more information)