Super Smash Bros. Ultimate Ripping Project

[Worldblender]

Looks fairly promising, can you tell me how do install, use it

I updated the readme with installation, usage, and removal instructions. Here they are, copied from there:
## Installation
This set of two scripts requires Blender 2.70 or later, but only 2.79 has been tested.
1. Clone or download this repository. If downloaded, extract the files after that.
2. Open Blender and select `File -> User Preferences -> Install from File` and select the newly downloaded scripts.
3. In the search bar in the upper left, search for `Super Smash Bros. Ultimate`. If no results are found, try enabling the `Testing` supported level below the search bar.
4. Enable the plugin by clicking the checkbox next to the plugin name.
5. Select `Save User Settings` in the lower left and close the window.

## Removal
1. Open Blender and select `File -> User Preferences -> Add-ons`.
2. In the search bar in the upper left, search for `Super Smash Bros. Ultimate`. If no results are found, try enabling the `Testing` supported level below the search bar.
3. Disable the plugin by clicking the checkbox next to the plugin name - or uninstall the plugin by clicking `Remove`.
4. Select `Save User Settings` in the lower left and close the window.

## Importing NUMDLB or NUANMB data
1. Navigate to `File -> Import -> NUMDLB` or `File -> Import -> NUANMB` and select the file(s) you wish to import. One at a time for NUMDLB files, and multiple at a time for NUANMB animation files.
2. Only if importing NUANMB files, select the armature (skeleton) for the target model before importing them.
3. Select `NUMDLB Import` or `NUANMB Import`, depending on what was selected earlier.