Add Liveboat entry (#178)

This is an app that I just released - it uses Newsboat url files to
generate static pages which can be hosted anywhere (demo:
https://konrad.website/liveboat-github-runner/#/)

README.md

@@ -169,6 +169,9 @@ A static web site generator is an application that takes plain text files and co
 *   [foto](https://github.com/waynezhang/foto) - Yet another another publishing tool for minimalist photographers. - `#Go` `#Golang`
 *   [Prosopopee](https://github.com/Psycojoker/prosopopee/) A static website generator to make beautiful customizable pictures galleries that tell a story  - `#Python`
 *   [Sigal](https://sigal.readthedocs.org/en/latest/) - `#Python`
+*
+### RSS News
+-   [Liveboat](https://github.com/exaroth/liveboat) - Generate static pages from your RSS urls - `#Rust`
 
 ### Single Page