Remove old bin scripts to prepare for wp-plugin-dev-lib
Squashed 'bin/' content from commit 6956ba1

git-subtree-dir: bin
git-subtree-split: 6956ba157423513adfd4f61e017064cf26ca4cbd
Merge commit '19e79c7d6f6f21945f3072e116e543ad183af003' as 'bin'
Add .travis.yml and .jshintrc