Update README.md

Author: ehanson8

README.md

@@ -41,6 +41,7 @@ Based on user input, this script extracts all of the item metadata from the spec
 This script creates a 'completeValueLists' folder and for all keys used in the repository, extracts all values for a particular key to a CSV with item IDs.  It also creates a 'uniqueValueLists' folder, that writes a CSV file for each key with all unique values and a count of how many times the value appears.
 
 #### [getGlobalLanguageValues.py](getGlobalLanguageValues.py)
+This scripts extracts all unique language values used in the repository.
 
 #### [getLanguageValuesForKeys.py](getLanguageValuesForKeys.py)