README.rdoc in frameworks-capybara-0.2.3 vs README.rdoc in frameworks-capybara-0.2.4

@@ -34,9 +34,10 @@
   REMOTE_BROWSER - used when specifying remote test, must be one of either 'ie', 'firefox', 'chrome', 'headless', 'remote'
   REMOTE_BROWSER_PROXY_URL - used when specifying remote test, sets proxy on remote browser (Firefox only at present, other browsers must have proxies set appropriately on remote machine)
   REMOTE_BROWSER_VERSION - used when specifying remote test on a grid the provides a choice of browser versions for a given browser
   REMOTE_URL - URL of remote Selenium-Webdriver server e.g. http://yourremotehost:4444/wd/hub
   FIREFOX_PROFILE - specify a firefox profile to use when running in-browser tests (local or remote)
+  FIREFOX_PREFS - specify a json string of additional preferences e.g. FIREFOX_PREFS='{"javascript.enabled": false}'
   CELERITY_JS_ENABLED (string - 'true', 'false') - determines whether Celerity (HTMLUnit) attempts to execute javascript 
   XVFB - (string - 'true', 'false') - determines whether XVFB is used to run browser (i.e. headless Firefox on *nix platform)
   FW_CERT_LOCATION - path to client certificate (combined pem)
   CHROME_SWITCHES - pass in any allowed switches for the Selenium chrome driver (http://peter.sh/experiments/chromium-command-line-switches/) e.g. CHROME_SWITCHES="--user-agent=Mozilla/5.0 (PLAYSTATION 3; 3.55)"