Storing default settings for 'Show passed koan' and 'Look ahead'

Hi!

My setup: 
  * On the screen, side by side browser with KoansRunner.html and IDE.
  * watchr koans-mac.watchr

To keep me focused I've set 'Show passed koans" to false. Every time I've made a change in IDE this setting would be lost (while page was reloaded). I've fixed this for myself by storing default value in browser cache.

Best,
Greg