added homepage and cite

TID2008.py

@@ -3,21 +3,21 @@ import os
 import pandas as pd
 import datasets
 
-# _CITATION = """\
-# @InProceedings{huggingface:dataset,
-# title = {A great new dataset},
-# author={huggingface, Inc.
-# },
-# year={2020}
-# }
-# """
+_CITATION = """\
+@article{ponomarenko_tid2008_2009,
+author = {Ponomarenko, Nikolay and Lukin, Vladimir and Zelensky, Alexander and Egiazarian, Karen and Astola, Jaakko and Carli, Marco and Battisti, Federica},
+title = {{TID2008} -- {A} {Database} for {Evaluation} of {Full}- {Reference} {Visual} {Quality} {Assessment} {Metrics}},
+year = {2009}
+}
+"""
+
 
 _DESCRIPTION = """\
 Image Quality Assessment Dataset consisting of 25 reference images, 17 different distortions and 4 intensities per distortion. 
 In total there are 1700 (reference, distortion, MOS) tuples.
 """
 
-# _HOMEPAGE = ""
+_HOMEPAGE = "https://www.ponomarenko.info/tid2008.htm"
 
 # _LICENSE = ""