Merge pull request #24 from maurotalevi/master

Added settings.xml for access to JBoss repo
Added Eclipse Code Formatter file
Deprecated FeatureManagerBuilder.featureClass()
Merge remote-tracking branch 'origin/master'
FeatureManager.getFeatures() now returns a set
Removed Hamcrest dependency from test-harness
Added FeatureProvider SPI (#23)
Added FeatureProvider.getMetaData() for providing custom meta data for dynamic features (#23)
Added checks to ensure that the testing modules are only used with enums (#23)