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Accept one extra argument/update document

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`@@ -98,6 +98,9 @@ const fetchUsersReducer = (state, action) => {`
`98`	`98`
`99`	`99`	`The (marginal) advantages of using redux-machine over just using the FSM pattern is that you can more clearly express intent and write slightly less code.`
`100`	`100`
	`101`	`+##Supporting an Extra Argument`
	`102`	`+redux-machine supports to passing an extra argument to state reducers, for cases where a state reducer requires a third argument for other state it dpeneds on.`
	`103`	`+`
`101`	`104`	`##Asynchronous Effects`
`102`	`105`
`103`	`106`	redux-machine doesn't prescribe a way of handling asynchronous effects such as API calls. This leaves it open for you to use[no async effects library](http://stackoverflow.com/a/34599594/2482570),[redux-loop](https://github.com/redux-loop/redux-loop),[redux-thunk](https://github.com/gaearon/redux-thunk),[redux-saga](https://github.com/yelouafi/redux-saga),[redux-funk](https://github.com/mheiber/redux-funk) or[anything else](https://github.com/markerikson/redux-ecosystem-links/blob/master/side-effects.md).

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`@@ -1,13 +1,13 @@`
`1`	`1`	`"use strict"`
`2`	`2`
`3`	`3`	`varcreateMachine=function(reducersObject){`
`4`		`-returnfunction(state,action){`
	`4`	`+returnfunction(state,action,extraArgument){`
`5`	`5`	`varstatus=(state&&state.status) ?state.status :'INIT'`
`6`	`6`	`varreducer=reducersObject[status]`
`7`	`7`	`if(!reducer){`
`8`	`8`	`thrownewError('reducersObject missing reducer for status '+status)`
`9`	`9`	`}`
`10`		`-constnextState=reducer.apply(undefined,arguments);`
	`10`	`+constnextState=reducer(state,action,extraArgument)`
`11`	`11`	`if(nextState===state){`
`12`	`12`	`returnstate`
`13`	`13`	`}`

Lines changed: 1 addition & 1 deletion

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`@@ -105,7 +105,7 @@ test('should transition between states', t => {`
`105`	`105`	`t.end()`
`106`	`106`	`})`
`107`	`107`
`108`		`-test('should passall arguments to inner reducers',t=>{`
	`108`	`+test('shouldbe able topassan extraArgument to inner reducers',t=>{`
`109`	`109`	`constconfigReducer=(state={},action)=>state;`
`110`	`110`	`constgameReducer=(state={},action,isMuted)=>{`
`111`	`111`	`switch(action.type){`

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