* add 'next' api

* add render APIs

* add 'as' prop to Link

* check Accept header to serve json response

* check if response was finished on getInitialProps call

* move server/app to server/index

* load webpack-hot-middleware-client by absolute path

* server: options for testing

* add tests

* example: improve

* server: make dir optional

* fix client routing

* add parameterized routing example

* link: fix display url

* Add custom-server-express example (#352)

* Add custom-server-express example

* Remove extraneous nexts in express routes defs

* Update next config in server.js

* Handle accept headers totally inside Next.js (#385)

* Handle accept headers totally inside Next.js
Now user doesn't need to handle it anymore.

* Move json pages serving to /_next/pages base path.

* Join paths correctly.

* remove next/render