There's a couple of Github features that would make it easier to explore and install your project:

    1. It has built-in support for releases. 
 Following this guide, you can make the different releases versions easier to navigate, and keep them from cluttering the codebase:

    2.  It can integrate images, like screenshots, into the readme markdown file, making them clearly visible to anyone browsing the project page.  The images can also be in a sub folder, to keep them from cluttering the codebase.  Here's a guide to do so: