fixed higherOrderFunctions "flatten to make nested arrays easy to work with"
fixed higherOrderFunctions "flatten to make nested arrays easy to work with"

mwharris1313/javascript-koans,mwharris333/javascript-koans,mwharris333/javascript-koans,mwharris1313/javascript-koans,mwharris333/javascript-koans,mwharris1313/javascript-koans