docs: setting up mocks in non-browser env (#1630)
docs: setting up mocks in non-browser env (#1630)


pygy/mithril.js,lhorie/mithril.js,tivac/mithril.js,impinball/mithril.js,barneycarroll/mithril.js,MithrilJS/mithril.js,MithrilJS/mithril.js,impinball/mithril.js,tivac/mithril.js,pygy/mithril.js,lhorie/mithril.js,barneycarroll/mithril.js