Merge pull request FZJ-IEK3-VSA#68 from ddceruti/master

Update README.md with small typo

Author: l-kotzur

README.md

@@ -63,7 +63,7 @@ Initialize an aggregation object and define the length of a single period, the n
 						rescaleClusterPeriods = False,
 						segmentation = True,
 						representationMethod = "distributionRepresentation",
-						distributionPeriodWise = False
+						distributionPeriodWise = False,
 						clusterMethod = 'hierarchical')
 ```