Fixes #171
Adding pluggable registry to EntryIterator in LastNStore
Merge pull request #177 from calrissian/registryInLastN

Adding pluggable registry to EntryIterator in LastNStore
Update README.md
Update README.md
Update README.md
Update GroupedKey.java
Update AccumuloFeatureStore.java
Merge pull request #176 from calrissian/featureStoreQuery

Feature store query
Merge branch 'master' into expirationFilter

Conflicts:
	store/lastn-store/src/main/java/org/calrissian/accumulorecipes/lastn/impl/AccumuloLastNStore.java
Merging master and fixing issues