ubifs: change the ubi setting to 4k-page

Signed-off-by: Josh Wu <josh.wu@atmel.com>
ubifs: move generate ubifs to gen_ubi.sh, add a ubi_setting.sh

All we need to do is change the ubi_setting.sh

Signed-off-by: Josh Wu <josh.wu@atmel.com>
settings: add screen settings

  1. enable the status bar
  2. auto detach
  3. utf8 support
  4. set scroll buffer size

Signed-off-by: Josh Wu <josh.wu@atmel.com>
settings: vim: add vim settings

Following the readme.md:
  https://github.com/gmarik/Vundle.vim

And check the examples:
  https://github.com/gmarik/Vundle.vim/wiki/Examples

  - enable line number
  - set up vundle
  - enable status bar

Signed-off-by: Josh Wu <josh.wu@atmel.com>
settings: add git configuration

Signed-off-by: Josh Wu <josh.wu@atmel.com>