passport.initialize() middleware not in use
When using koa-passport i get this  error : 

```
Error: passport.initialize() middleware not in use
at IncomingMessage.req.login.req.logIn (G:\NAP\node_modules\passport-local\node_modules\passport\lib\passport\http\r
   equest.js:30:30)
at Object.next (G:\NAP\node_modules\koa\node_modules\co\index.js:86:21)
    at Function.<anonymous> (G:\NAP\node_modules\koa\node_modules\co\index.js:89:18)
       at callback (G:\NAP\node_modules\koa-passport\index.js:25:14)
      at Context.delegate.success (G:\NAP\node_modules\koa-passport\node_modules\passport\lib\passport\middleware\authenti
    cate.js:161:18)
     at Context.actions.success (G:\NAP\node_modules\koa-   passport\node_modules\passport\lib\passport\context\http\actions
  .js:21:25)
    at verified (G:\NAP\node_modules\passport-local\lib\passport-    local\strategy.js:83:10)
    at Strategy._verify (G:\NAP\Client\Applications\AutenticationUI\authenticationapp.js:29:13)
     at Strategy.authenticate (G:\NAP\node_modules\passport-local\lib\passport-local\strategy.js:89:10)
   at attempt (G:\NAP\node_modules\koa-passport\node_modules\passport\lib\passport\middleware\authenticate.js:243:16)
```

and this is my [Application](https://gist.github.com/MBehtemam/9184138)
