Release new stable version

Folks, let's :ship: a v0.2 and keep the dream alive.

**[What's changed since v0.1](https://github.com/benbalter/post-forking/compare/0.1...master)**

## Changelog: 

* WP 3.6 compatibility (props @alleyinteractive, @netaustin)
* "View fork" preview should try to use template redirect intelligently (props @goldenapples)
* Documentation fixes (props @yurivictor)
* Better diffing (props @neuaustin)
* Better tests
* Added merge API hook (props @pablovallejo)
* Minor security fix (props @joncave)
* Better i18n (props @boddhi, @bueltge)
* Added Dutch translation (props @bjornw)
* Added French translation (props @fxbenard)
* Added German translation (props @bueltge)
* Make `post_id` an optional argument on `title_filter` to prevent errors in P2 theme (props @japh)
* Added build file to minify JS and CSS
* Improved UI

@aaronjorbin @danielbachhuber thoughts?

## Todo

- [x] passing tests would be absolutely :sparkles: 
- [x] Can someone :+1: that it works on 3.6?
- [x] Clear out [outstanding issues on the milestone](https://github.com/post-forking/post-forking/issues?milestone=5&page=1&state=open)
- [x] :shipit: 

(/cc @nacin because emoji :tangerine: :panda_face: :icecream:)