Add support for toml config

[cieslarmichal]

Toml parser needs to be added and load config into map, where key is flatten key like database.host. There was yaml/xml support added couple days ago so you can reference it (changes will be very similar to that): #24

[cieslarmichal]

some toml library you can use: https://github.com/marzer/tomlplusplus

[AdamJovanovic]

This looks like an issue I'd be interested in. I'll get stuck into it once I finish the apple-clang bug fix on faker-cxx.

[cieslarmichal]

Ok, assigned :)