Squashed 'subtrees/typeahead/' content from commit 2bd1119

git-subtree-dir: subtrees/typeahead
git-subtree-split: 2bd1119ecdd5ed4bb6b78c83b904d70adc49e023
Merge commit '69b65517763489ea914aace185ea43f8b4764447' as 'subtrees/typeahead'
update subtree readme