Add Config file parser

[brianmcgillion]

Need to extend the config parser

We should be able to parse ALL config values into a memory representation, for faster look ups.

this should be achieved by opening the config file once and reading all value pairs into a memory structure.

In addition if the config file is edited while the process is running we should use SIGHUP, to reparse this this file, OR we could create an inotify entry to signify that we should reparse the file.