Add keybinding.

 - magit-status
 - magit-goto-next-section
 - magit-goto-previous-section

Deleted
Modified :build.
Merge branch 'master' of github.com:nanasess/dot.emacs

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Merge branch 'master' into local
js2-mode support.
Merge branch 'js2-mode' into el-get-helm
howm, migemo, etc...
Add helm-ag.
use migemo.

 - `helm-show-kill-ring'
Add helm-gtags.