- Added option to perform shallow
Use neobundle#util#system()
Add markers
Update path for neosnippet-snippets

The previous path has been changed and gave the error:

```
neosnippet default snippets cannot be loaded.
You must install neosnippet-snippets or disable runtime snippets.
Press ENTER or type command to continue
```
Merge pull request #218 from christianbundy/master

Update path for neosnippet-snippets
Refactored commands
Improve commands behavior
Improve update behavior
Improve update behavior
Use neobundle#util#system()
Add markers
Refactored commands
Improve commands behavior
Improve update behavior
Improve update behavior
Merge branch 'commands'
Improve neobundle#parser#local()
Improve chomp
Optimized parser
Improve hooks feature