'ConfigReader::Simple' reads and parses simple configuration files. It is
designed to be smaller and simpler than the 'ConfigReader' module and is
more suited to simple configuration files.

The configuration file format
The configuration file uses a line-oriented format, meaning that the
directives do not have containers. The values can be split across lines
with a continuation character, but for the most part everything ends up
on the same line.

The first group of non-whitespace characters is the "directive", or the
name of the configuration item. The linear whitespace after that
separates the directive from the "value", which is the rest of the
line, including any other whitespace.