* Remove the use of CDN and bundle everything inside the app.
We still pre-build the prefetcher because it needs
different webpack config which only targets browsers
supports Service Workers.

* Remove cdn config item.
We no longer using it.

* Stop adding script tags when staticMarkup=true

* Remove babel-plugin-transform-remove-strict-mode NPM module.

* 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

* Register the service worker.

* Update prefetcher code to do prefetching.

* Implement the core prefetching API.
support "import <Link>, { prefetch } from 'next/prefetch'"

* Implement a better communication system with the service worker.

* Add a separate example for prefetching

* Fix some typos.

* Initiate service worker support even prefetching is not used.
This is pretty important since initiating will reset the cache.
If we don't do this, it's possible to have old cached resources
after the user decided to remove all of the prefetching logic.
In this case, even the page didn't prefetch it'll use the
previously cached pages. That because of there might be a already running
service worker.

* Use url module to get pathname.

* Move prefetcher code to the client from pages
Now we also do a webpack build for the prefetcher code.

* Add prefetching docs to the README.md

* Fix some typo.

* Register service worker only if asked to prefetch
We also clean the cache always, even we initialize
the service worker or not.

* Add example app which demonstrate the problem.

* Add the first working version.

* Fix lint issues.

* Add README.md

* Use /_next/main.js as the main file URI

* Add the support for loading the core next bundle.

* Optimize the output by removing Next modules from pages.

* Use the same package.json as master use.

* Change the example repo's README for simpler instructions.

* Change example projects package.json to support next build and start.

* Change main.js into commons.js.

* Add support for hot core reload and errors.

* Introduce require based on eval-script.

* Add error reporting support with hot reloading.

* Update README.md

* display runtime errors by error-debug

* server: fix status

* render Error component on client error

* server: render runtime errors of error template

* server: handle errors of error template on render404

* server: add a comment

* server: refactor renderJSON

* recover from runtime errors

* _error: check if xhr exists

* _error: improve client error

* _error: improve error message

* pass pathname and query to getInitialProps on both server and client

* README: describe about the contet object of getInitialProps

* head-manager: batch update

* side-effect: remove redundant rendering cycle checks

* load client js from cdn with fallback

* fix cdn url

* Added glamor css

* Using pseudoclasses instead of calling functions

* Updated readme using style instead of default import for css

* Added linting using standard

* Linting on test