update readme

README.md

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 ### Supported Tasks and Leaderboards
 
-[More Information Needed]
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-### Languages
+This dataset is intended to train image classification or regression models to predict the time period in which color photographs were taken. The task could be approached either as a classification task or could be approached as an image regression task. 
 
-[More Information Needed]
 
 ## Dataset Structure
 
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 ### Data Splits
 
-[More Information Needed]
+There is a single training split since the original dataset doesn't define a train-test split. 
 
 ## Dataset Creation