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 'bcd4bb112fbed32fdfb7a4d09f12c629a3b6234f'