Two small koan patches#2

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alexch wants to merge 2 commits intomrdavidlaing:masterfrom

Commits on Jan 29, 2011

Fixed a typo causing one koan group not to load properly. Those who once saw 49 koans in 9 groups will now see 55 koans in 10 groups.
nfiniteset
committed

Commits on Feb 4, 2011

introduce the triple-underscore so even falsy expectations can indicate 'fill in the blank' (including the very first test)
alexch
committed