readme: language: 
    - "List of ISO 639-1 code for your language"
    - lang1
    - lang2
    
  thumbnail: "url to a thumbnail used in social sharing"
  
  tags:
    - tag1
    - tag2
  license: "any valid license identifier"
  
  datasets:
    - dataset1
    - dataset2
    
  metrics:
    - metric1
    - metric2