Update README.md

README.md

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 ---
-license: cc-by-4.0
+license: mit
 pretty_name: Ground-based Imaging data
 tags:
 - astronomy
@@ -9,7 +9,7 @@ tags:
 
 # GBI-16-2D Dataset
 
-SGBI-16-2D is a dataset which is part of the AstroCompress project. It contains data assembled from the Keck Telescope. <TODO>Describe data format</TODO>
+GBI-16-2D is a dataset which is part of the AstroCompress project. It contains data assembled from the Keck Telescope. Note that the underlying data is released under its own license, and our MIT license covers our code contribution.
 
 # Usage