Added template for datasplit config file.

video_prediction_tools/data_split/datasplit_template.json

+# NOTE: This json-file should not be processed and simply serves as an exemplary file for configuringing the datasplit.
+#       If you would like to generate your own datasplit config file, you may copy this template and modify it to your personal needs.
+#       However, remember to remove any comment lines (starting with #) from your config-file then!!!
+#
+# Explanation: In the following, the data of the whole year 2015 and the first half of 2016 is used for training,
+#              while the data of 2017 and 2018 are used for validation and testing, respectively.
+#              Be aware that this is a prue data file, i.e. do not make use of any Python-functions such as np.range or similar here!
+{
+    "train":{ 
+             "2015":[1,2,3,4,5,6,7,8,9,10,11,12],
+	     "2016":[1,2,3,4,5,6]
+             },
+     "val":
+             {
+             "2017":[1,2,3,4,5,6,7,8,9,10,11,12]
+             },
+      "test":
+             {
+	     "2018":[1,2,3,4,5,6,7,8,9,10,11,12]
+             }
+ }