Required nodejs version issue

[huaigulin]

Hi,

I noticed in the README, it says "Install auspice for use as a global command. This requires nodejs 10+."

But in package.json, the required node version is 10.8.x. I think the correct way of saying "requires nodejs 10+" is >=10.0.0.

Updating package.json might introduce breaking change, so should we update README to reflect the true requirement in package.json?

[jameshadfield]

Thanks @huaigulin, PR up to relax this requirement. Node 10.8 is a couple of years old now so I don't think there's need to specifically support previous versions, although I think it's likely they'd work.