Should we use British or American English in the documentation?

[shirleyquirk]

google translate accepts British english but outputs US, meaning it can 
translate from [british to 
american](https://translate.google.com/#view=home&op=translate&sl=fr&tl=en&text=My%20favourite%20neighbour%2C%20the%20haemophiliac%20orthopaedist%20and%20barrister%2C%20known%20to%20harbour%20encyclopaedic%20archaeological%20catalogues%2C%20is%20licensed%20to%20practise%20paediatric%20anaesthetics%20in%20the%20centre%20of%20the%20operating%20theatre.%20Labouring%20with%20good%20humour%2C%20she%20recognised%20the%20calibre%20of%20a%20paralysed%20oesophagus%2C%20and%20has%20been%20honoured%20for%20analysing%20the%20colour%2C%20flavour%20and%20behaviour%20of%20foetal%20anaemia.%20The%20university%20is%20rumoured%20to%20have%20cancelled%20her%20drug-fuelled%20programme%20of%20midaeval%20dialogues%20after%20her%20rubbish%20behaviour%20whilst%20invigilating%20a%20maths%20exam%3A%20she%20organised%20sombre%20manoeuvres%3B%20travelling%20in%20draughty%20grey%20pyjamas%20down%20the%20dual%20carriageway%2C%20trailing%20a%20kilometre-long%20queue%20of%20rapidly-ageing%20amoebae%20fibre.)