adding class and instance name properties to .content.xml.
removed instance name.
Merge pull request #2 from Citytechinc/feature-component-class-name

Merging pull request for the addition of a class property to the .content.xml file indicating the implementing Java Class from which the component assets are generated.  While this attribute has no affect on the nature or behavior of the CQ component, it is useful meta-data to have readily available.