updated packages
improved sample
#7 removed ILMerge for debug to improve compile time during dev
#7 added FileConfiguratorFeature
#13 added CascadingConfigurationFeature
#14 added CustomConfigurationFeature
moved convenience methods into extensions
refactored LocalConfigurationFeature
updated README.md
Merge pull request #16 from adamralph/7

added added FileConfiguratorFeature, CascadingConfigurationFeature and CustomConfigurationFeature