Clone the repo, make sure you have node installed and then run:

npm install

Until it's packaged up, run the following command from the repo's directory:

npm link

Or if you have node installed globally

sudo npm link

To put the spriter script in your local bin directory.

if you have a directory called assets that has all your individual image frames, run:

spriter assets/

This will generate a sprites.json and sprites.png file that can be loaded into Quintus.

asset files should share an initial root and then end in incrementing numbers, e.g.:

mario01.png
mario02.png
mario03.png
luigi01.png
luigi02.png

Running spriter on a directory with those files will generate a sprite sheet with 2 sprites, mario and luigi, and 3 mario frames and 2 luigi frames.