software installation - Install haroopad correctly from tar.gz

Before you mark this as a duplicate of How do I install a .tar.gz (or .tar.bz2) file? hear me out first.

I downloaded the haroopad-v0.12.0_i386.tar.gz file from the haroopad website and extracted the archive expecting to find the normal .make or install.sh files but they were not there, instead there were two more archives - 'control.tar.gz' and 'data.tar.gz'.

I extracted both of them and below is the file tree. (I ommited the .icons tree structure from data.tar.gz because they are just icons).

control.tar.gz:

├── control
└── postinst

data.tar.gz:

└── usr
    ├── bin
    │   └── haroopad
    └── share
        ├── applications
        │   ├── Haroopad.desktop
        │   └── mimeapps.list
        ├── doc
        │   ├── changelog
        │   └── copyright
        ├── haroopad
        │   ├── haroopad <-------------
        │   ├── Libraries
        │   ├── nw.pak
        │   └── Resources
        │       └── Themes
        │           ├── editor
        │           │   └── default.css
        │           └── viewer
        │               └── default.css
        └── icons

I can get haroopad to run by double clicking the haroopad file (shown above with an arrow) but am sure there must be a better way to 'install' it.

I think I should copy these files somewhere - like the 'Haroopad.desktop' I suppose should go to '~/.local/share/applications', but I'm not so sure.

How do I install this archive correctly in such a way that I can run it from the dash and terminal?