relative paths with '-' inside a `string.match` statement were not
matching properly due to the nature of lua matching patterns. Replacing
'-' with '%-' resolves the issue.
- run `ls ROOT_PATH` on init to make sure we are in the right place
- match git path with `.*` to make sure we check when in a subdir
> it could cause issues though, fix this later with a better
> git interface
- fix a bug when removing nodes from huge dir
- only one `system` call for git status
- add relative paths to nodes
- parse git status from relative paths
