README updates from problem-specification#756

Merged

petertseng merged 4 commits intoexercism:masterfrom petertseng:readmes

Oct 31, 2018

+12-25

Commits on Oct 31, 2018

crypto-square: Fix misspelling

AndrewKvalheim
authored and
petertseng
committed
dominoes: Fix misspelling

AndrewKvalheim
authored and
petertseng
committed
hamming: simplify language

iHiD
authored and
petertseng
committed
change: modify description.md to match expected output

sdublish
authored and
petertseng
committed