WIP: Add v2.2 page [ci skip]
{ "text": "Models & Languages", "url": "/usage/models" },
{ "text": "Facts & Figures", "url": "/usage/facts-figures" },
{ "text": "spaCy 101", "url": "/usage/spacy-101" },
+ { "text": "New in v2.2", "url": "/usage/v2-2" },
{ "text": "New in v2.1", "url": "/usage/v2-1" },
{ "text": "New in v2.0", "url": "/usage/v2" }
]
