Viper is a complete configuration solution for Go applications including
12-Factor apps. It is designed to work within an application, and can handle all
types of configuration needs and formats. It supports:

– setting defaults
– reading from JSON, TOML, YAML, HCL, and Java properties config files
– live watching and re-reading of config files (optional)
– reading from environment variables
– reading from remote config systems (etcd or Consul), and watching changes
– reading from command line flags
– reading from buffer
– setting explicit values

Viper can be thought of as a registry for all of your applications configuration
needs.

This package contains the source code needed for building packages that
reference the following Go import paths:
– github.com/spf13/viper