Download this file and extract it:
https://www.dropbox.com/s/mwzxpuq7uhojsbk/data.zip?dl=0
This file contains to directories: "omniglot" and "omniglot_resized".
Create a folder named "data" and put the contents of this zip file into it.
python3 executions/omniglot_execution.py
There is a boolean variable in that file named TRAIN. If you want to do meta-training set it to True and if you want to do meta-testing set it to False.