* Theory of config

    * Make the defaults the same everywhere

    * There are two types of config files:

        1) A super simple ENV key:value file (config.proto defined in this package)
        2) A application defined <appname>.proto (.proto wherever you want to put it)


* 1) Basic application config.proto information

    the application config.proto is loaded from, in order:

    /usr/share/doc/appname/config.text
    /etc/default/appname
    ~/.config/appname/config.text

    These files ONLY HAVE ENV LIKE KEY/VALUE Pairs

* 2) application specific protobuf files

    Application config files are always located in the same place
    with the same name by default.

    For the application "forge" using forge.proto

    ~/.config/forge/forge.text

    To override these defaults, set the values in the 1) protobuf

* notes from the code

```
// Because you followed autogenpb's advice (you did follow it right?) you now
// win the automation lottery.
//
// for this .proto file, GetProtobufName(pb) returns "repos"
// Then, ConfigLoad(), ConfigSave(), CacheLoad() and CacheSave()
// all do exactly what is expected:
//
// Automatically work with the files:
//  ~/.config/<appname>/repos.pb
// or
//  ~/.cache/<appname/repos.pb
//
// message Repos {
//         string                      uuid                     = 1;
//         string                      version                  = 2;
//         repeated Repo               repos                    = 3;
```