[Emacs] remove trailing whitespaces before save
[Emacs] set Command-w to Kill current buffer

* and ignore some buffers on tabbar
[Emacs] add snippets for scheme
[Emacs] trying to complete filepath...
[Emacs] tweak settings of OCaml(tuareg-mode)
[Emacs] indent oz custom function
[Emacs] apply gofmt before save, only on go-mode