No mention of history peerDep in README

[qrohlf]

Right now if you install this project with the provided instructions it will result in an unmet peerDependency "history@^2.0.0 || ^3.0.0"

(1) It would be nice to inform users why this peerDep is specified
(2) It would be nice to note that users should npm i -S history as part of the install instructions in the README

[taion]

Well, the idea is that with flat deps in most recent versions of npm, you get these automatically when using React Router.

[thecodejack]

Can we atleast add support for history >4? kind of blocking other packages not using history...