auto update

[mike820324]

Since this vimrc is using github and git tags, I think it is possible to use vimproc and git to auto update it self.
Moreover, by using unite source, it is possible to create a simple interface to let the user choose whatever version they want to apply.

Progress:

• basic git functionality
  • git checkout tag
  • git checkout branch
  • git get tag list
  • git get branch list
  • git stashing
  • git fetch
  • git in other folder so that the user doesn't need to go to the .vim folder when they want to update the editor.
  • different git version compatative : 1f87416
• version indicator
• version info : d9691bb
• unite source

[mike820324]

The following four commits add the basic functionality of vimrc autoupdate:
9c21aed
23f1594
427acee
e0dea11

But still lacking some features

1. if a user is not in .vim folder, the update functionality failed
2. currently there is no version indicators
3. if a user accidentaly switch to version below v1.3, they lose the auto update functionality.

[mike820324]

For problem 1, the following link is a way to solve it.
http://stackoverflow.com/questions/5083224/git-pull-while-not-in-a-git-directory
if the git version is above 1.8.5
use
bash git -C $VIM command
otherwise use
bash git --git-dir=$VIM/.git --work-tree=$VIM command

[mike820324]

I also need to add bash git stashing, so that if a user has modify the vimrc file, he/she can still checkout other tags.

[mike820324]

d9691bb add tag version in unite sources. A big progress.