Local theme for unite.vim and matcher for tagbar


### Added two local themes: 

The major one is for `unite.vim`. The other one for `tagbar` is trivial.

It is quite nice if you use `unite.vim`

![unite normal]( http://d.pr/i/RtLV+ )
![unite insert]( http://d.pr/i/OcyE+ )

Two much mess to separate the commits because of the json alignment conflicts for each commits. Probably merge it after the previous commits about `ruby_version` and `syntastic`.

### Reference

https://github.com/Shougo/unite.vim/pull/188