[Docs] copyedit readme
[Docs] copyedit readme

PeterDaveHelloKitchen/nvm,ljharb/nvm,edwmurph/nvm,PeterDaveHello/nvm,ljharb/nvm,creationix/nvm,evocateur/nvm,edwmurph/nvm,lukechilds/nvm,PeterDaveHello/nvm,evocateur/nvm,creationix/nvm,lukechilds/nvm,PeterDaveHelloKitchen/nvm