Added abstract base class for CollectableValue. Moved MetricValue into this file and made into subclass. Added AttributeValue as second collectable type - one with non-numeric values. Renamed JSON formatter method
Added abstract base class for CollectableValue. Moved MetricValue into this file and made into subclass. Added AttributeValue as second collectable type - one with non-numeric values. Renamed JSON formatter method

Netuitive/collectdwin,Netuitive/netuitive-windows-agent