* cli: set engines node > 0.12
* cli: trying to transpile using babel-register on the fly
* downgrading fs-extras to 1.0.0 to let it work on Node 0.12
* lint and enforce single quote on strings
* remove individual plugins
* cli: include dist folder in the npm package
* cli: add build step on prepublish, add readme
* cli: use default options, because code is transpiled
* cli: output into es5
* cli: see published size, a few missing requires
* cli: replace const with var in node 0.12
* cli: cache node_modules on CircleCI
* cli: back to use const that is not changed to let by eslint
* cli: build separate package for npm publishing
* remove postinstall step
* cli: remove npm vs dev install check
