Update README.md

Author: ehanson8

README.md

@@ -54,4 +54,9 @@ Based on user input, this script extracts the ID and URI for all items in the re
 Based on user input, this script extracts the ID and URI for all items in the repository with the specified key-value pair to a CSV file.
 
 #### [metadataOverview.py](metadataOverview.py)
-
+This script produces several CSV files containing different information about the structure and metadata of the repository:
+        collectionMetadataKeys.csv - A list of all keys used in each collection with collection name, ID, and handle.   
+        dspaceIDs.csv - A list of every item ID along with the IDs of the collection and community that contains that item.
+        dspaceTypes.csv - A list of all unique values for the key 'dc.type'
+        keyCount.csv - A list of all unique keys used in the repository, as well as a count of how many times it appear.
+        collectionStats.csv - A list of all collections in the repository with the collection name, ID, handle, and number of items.