#86 Added test for Store.Configuration.getKeyType()
minor changes on javadoc
#86 Added test for Store.Configuration.getValueType()
#86 Added test for Store.Configuration.getCapacityConstraint()
#86 Added test for Store.Configuration.getEvictionVeto()
#86 Added test for Store.Configuration.getEvictionPrioritizer()
#86 Added test for Store.Iterator.hasNext()
#86 Added test for Store.Iterator.next()