Squashed 'lib/string.interpolate.js/' changes from bd62000..1db99d3

1db99d3 Update README.md

git-subtree-dir: lib/string.interpolate.js
git-subtree-split: 1db99d3c7509c5cdd36217d36ad03940121a090d
Merge commit 'b2a79c7eb3d1d6da09cb561ee6bdce590411fae8'