* form handler example: Update deps and fix build from dep update
* Ran lint error fixers
* Fixes errors that occur when commit occurs
* Commit linter fixes
RE: https://github.com/zeit/next.js/issues/4587, this pull request improves the with-segment example.
Previously, only SSR page loads were tracked. This pull request adds manual page view logging via `Router.events.on('routeChangeComplete')` in `Page.js`.
There is also a minor bug fix on the textarea to remove a console error.
