Changed the configuration file repository to a singleton

Merge pull request #44 from kschroeder/develop

stuff

0.8.19: Merge pull request #43 from kschroeder/develop

Some CLI changes

0.8.18: Merge pull request #42 from kschroeder/develop

'cause my quotes were wrong'

Made list-keys easier to read

Merge pull request #41 from kschroeder/develop

Changed the list keys to put the description on a separate line to ma…

0.8.16: Merge pull request #40 from kschroeder/develop

Added a hasValue check

0.8.15: Merge pull request #39 from kschroeder/develop

Some fixes

Changed to use the SplFileInfo realpath

Merge pull request #37 from kschroeder/develop

Changed to use the SplFileInfo realpath

0.8.13: Merge pull request #36 from kschroeder/develop

Some Builder Factory stuff

0.8.12: Merge pull request #35 from kschroeder/develop

A bunch o'f stuff

Added a return type for ManagerInterface::getConfiguration

Merge pull request #34 from kschroeder/develop

Added a return type for the manager interface getConfiguration()