Updated Git configurations

.gitattributes

@@ -57,3 +57,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+data/**/* filter=lfs diff=lfs merge=lfs -text

.gitignore

@@ -0,0 +1,7 @@
+# Ignore files protected under the Cityscapes license. These must be downloaded
+# manually (see README.md)
+downloads/
+data/**/*.image.png
+data/**/*.camera.json
+data/**/*.vehicle.json
+data/**/*.timestamp.txt