## [Simple](simple.md)

Simple integration with [`gulp`](http://gulpjs.com).

## Base environment

Respond to environments like `--env=production`.

## [Automatically set environment](auto.md)

Respond to tasks like `gulp release`.

## [Using environment files](env-files.md)

Using environment files to augment source files.

## [Working with travis](travis.md)

Detecting [travis](https://travis-ci.org) and changing the environment accordingly.