Updated .gitignore, conf.pgp, sample conf.json

I really like just storing conf info into a simple json file that I can
easily move outside of an application root or guard via server conf. It
makes things simpler in my opinion.

Updated .gitignore to ignore any actual conf.json's

Allowing CONFIG_FILE_PATH to be defined before including the conf file
that way if desired, that can be set to something other than the
conventional name.