extended examples and added advice
added details about keyboard requirements
corrected code
tweaking
further tweaks
edited sentence
updated example intro

feedback from alex surkov
typo fixed
fixed acc name

feedback from alex
no change
trying to fix conflict
typos fixing
removed todo
added heading ids and TOC links
typo fixed
try fix conflict
fixed stuff removed to fix merge
added self acks
indented
added headings to toc