combineReducers doc amendment (#2055)
combineReducers doc amendment (#2055)

* combineReducers doc amendment

Important to understand that if you move from custom combine function to combineReducers during refactoring, code: `myLastState === store.getState()` will have different behavior in some cases.

* Update Reducers.md

lifeiscontent/redux,CompuIves/redux,gaearon/redux,bvasko/redux,roth1002/redux,jas-chen/redux,jas-chen/typed-redux,lifeiscontent/redux,bvasko/redux,CompuIves/redux,jas-chen/typed-redux,gaearon/redux,jas-chen/redux,roth1002/redux