Added links to reviews & mentions online

I finally bit the bait and went ahead and added them on the home page.

I tried searching online if this has any SEO advantages but couldn't really figure out. But more than just that, it's a small way to say thank you to all the kind folks that bothered mentioning my app. It felt good reading it on so many places (there were many, many more but didn't list them all).

Hopefully this will add some cred 🤷🏻‍♂️