Request to update Cutter RE information and Addition of Rizin

Cutter has removed radare2 as their primary engine and replaced it with radare2 fork Rizin.

Rizin - https://github.com/rizinorg/rizin/releases/tag/v0.2.1
More Info regarding the replacement of radare2 - https://rizin.re/posts/faq/

Lastly, add Rizin to the list. 

Thank you for the awesome list!
