Micro tweaks + badges for tickets and lists

Simplified the config

Instead of using a table on a seperate module,
configs are now loaded from the main config table
(`core.config`) and have a flat structure, having
each field's name prefixed with `black_`

Made installing easier

Added a `init.lua` file which requires the actual plugin file.
This enables people to painlessly cloning the repository and
having the plugin work out of the box. Cloning the repository
is useful since you can simply update by doing `git pull`.

Updated the way configs are loaded

It is now a similar system to my memusage plugin,
you create a file in your lite `user` dir and return
a table with the config items.
Also updated the README to use a table for the config fields,
and it now also includes an example snippet for the config.

Cleaned comments and removed force file reload

Refactored error branch

Small tweaks to .gitignore and README

First commit

The plugin is fully working but some improvements may come in the future.