Squashed 'bin/' changes from 814a757..4c91efb

4c91efb Add install-wp-tests script for Travis CI

git-subtree-dir: bin
git-subtree-split: 4c91efbbee2a1b6024d8065e3bd7344811cd012d
Merge commit 'ca2421d746f9b0e3a205eef642aecb6eefce7870'