1. Download the zip gpasteitin-revised package.
2. Extract the gpasteitin-revised package.
3. Open Terminal and cd into the gpasteitin-revised folder 
4. Run this command: sudo ./install.py install

Start from Gnome Menu -> Accessories, or run "gpasteitin" command from terminal.

1. Open Terminal and cd into the gpasteitin-revised

2. Run this command: ./gpasteitin/gpasteitin.py

Keep in mind you will need to install a few Python packages.
Once installing gpasteitin you will be asked to install these packages.