Made a extensive modfication:

* Fixed indent problem
  Note: It leads to generate wrong indent lines when using clang_format

* Added some customize functions

* Added plugins(Ctrl-P, ZoomWin ,Powerline, supertab, snipmate, clang_format)
  Note: snipmate plugins is different from before, it fixed some problems with
        omnicomplete

* Removed plugins(latex-related, javacomplete, html5, jinja2)

* Added setting about new plugins