* support different env configs.
* fomrat code
* Hide doc
* Slightly rework the PR
* Remove .env in default template
* Use just one entry in the paths
* Unify env.js and loadEnv.js
* Oops, forgot these folks
* mv create-react-app/index.js -> create-react-app/creteReactApp.js
* update to modern code style
* var -> cosnt
* set trailing-coma to es5 for prettier
* Make all vars accessiable in index.html
* Fix wrong env provieded to DefinePlugin
* Separate results from getClientEnvironment
* The `string` should be object instead of string
* Fix accessing wrong field
* Changed variables naming to `raw` and `stringified`
* Remove trailing commas